You can create a new wallet with Electrum.
When you want to use the legacy one, load up that one, when you want to use the SegWit one, load that up.
I advise you backup your seed safely to paper, just in case, until you do the creation and verify they both load up.
Write the new wallet seed also on a paper for safe keeping.

You guys reminded me of the days when one of the very few nice cartoons I could watch was Vuk.

Unless they set up a cold storage, as the others said, I see one more use case for offline generated seed: paper wallet. Of course, a Live OS is advised so you make sure the seed will not be saved onto a computer that will later go online. The seed and a few addresses from the wallet can be easily seen as a paper wallet and can be used for deposits aimed for long term hold.

VISA has its own "internal" (?) FOREX rates, usually better than what the banks offer.
If they would do something similar for Bitcoin, hence turning off the many (sometimes hidden) fees various "Bitcoin card" issuers or "Exchanges selling Bitcoin for card" have, it could be an interesting news.
But I think that we are not there yet.
We'll see...

You should start with looking for the paths presented here: https://en.bitcoin.it/wiki/Data_directory

1. As said, this is not the best place to advertise your project, hence you should move the topic.
2. What stops you from conveniently log/store the information you get before (API keys) or after (policy number) encrypting it? If you want to tell about IP blacklist, read 4.
3. What stops the trusted person use the policy number and withdraw - sooner or later - those funds like he would have the API keys himself? (excepting IP)
4. From what I see the only security measure would be that the Binance account API keys work only with a small list of IPs. I don't have experience with the API keys, but I don't expect "the next generation" will be able to enter from the exact whitelisted IP. Most households have dynamic IP, hence the Binance account will have to allow IP ranges or everything (if that's possible), hence allowing the funds get stolen (see [2] and [3]).

Am I missing / misunderstood something?

Because it's an obvious scam.
I've archived this and added a nice trust feedback.

I did (and do) expect it to get into Bitcoin. But it won't be easy to spot it, because the causality is somewhat indirect.
I expect that companies will see that this means inflation and buy more Bitcoin. (And we're back to institutional investors you expect  )

But I did expect the price grow this week and it didn't, hence I can (too) easily be wrong.

La partea cu ajunsul banilor in cont, poate fi un pic problematic. Asta fiindca si bancile, si institutiile financiare nebancare (cred ca Revolut este asa ceva) cel putin vor ridica o spranceana cand vad de unde vin banii. La cazul extrem, pot sa blocheze contul si - cel putin in cazul bancilor - sa te intrebe de sanatate.
Stiu ca intr-o vreme se puteau retrage bani de pe Bitstamp (EUR/SEPA) in Revolut.
Stiu ca intr-o vreme se puteau schimba bani de pe BitcoinRomania direct la tine in cont. Ambele metode presupun ca tu sa ai si contul la casa de schimb, si contul de card pe acelasi nume. Probabil si verificarea de buletin va fi necesara.
Mai sunt variante de gen vinzi pe localbitcoin si iti transfera banii in cont. Dar si acolo pot sa apara tepe, ca nu stii care-i sursa banilor care o sa iti vina, sau unii pot sa sune la banca sa zica ca ti-au trimis banii din greseala (cred).

Din cate stiu, cea mai sigura metoda este sa iti faci un card Bitcoin. Neexistand intermediari, nu are cine sa strambe din nas. Doar ca alea in general presupun costuri in plus si prefera ca tu sa faci cumparaturi cu ele, nu sa retragi. Pentru la noi AdvCash, Binance, Crypto.com, Wirex cred ca toate merg. Poate si altele, dar cum nu este exact de vreai, nu dezvolt si mai mult.

Sure. That's what there's fiat for.

Or you are expecting it to disappear? No. Governments will keep their claws in the monetary politics, hence they'll keep centralized money. Your banknotes may work with govt issued stablecoins. But should not be mixed with Bitcoin.

OK, for the small fast transactions I see that centralization may come upon us.
But I expect to have it in the form of web wallets and centralized exchanges which will have LN capabilities and will allow people even "pay for their coffee".
If banks join the party... well, it's a free world.

But I don't see why we would go back to banknotes.

So if you want the master private key, basically as it was answered in the first post, go to console tab (you may need first View->Show Console) and type

If you want the private key for one of your addresses in Electrum (you may need View->Show Addresses) go to addresses tab, right click an address and "private key".

I see you use temporary wallets for tests, very good. If you also want to try the transactions I recommend you run Electrum with --testnet parameter, you get testnet coins from testnet faucets for free and try there all you need.

No. You should type them exactly as you did before. And if you had one or more spaces you should also add them in the same way. Even a space at the end may matter (if it was there or not).
Also when you click Options, make sure you click only "extend this seed with custom words" and not "bip 39 seed", because the result is different if you check or not that box.

No idea, sorry. I've been using Multibit a lot, I've not used Multibit HD at all and I have no idea what severs they've used. I can only guess/hope it's the same server.
I guess that it could be one these projects https://github.com/Multibit-Legacy  (maybe the BritService, I have no idea).
However, imho it's a risky endeavor if you go on that path. When I last used MultiBit it had some odd errors now and then which I don't know if they ever got fixed, since the development was already stopped.

So instead of spend a lot of time making it work - who knows how bad - you can make better use of that time and maybe improve the existing tools in order to help (Windows) people get the useful information out from their wallets and into Electrum.

Bank notes are IOU ("I owe you") papers. Central banks keep large quantities of gold to back that.
You want to give banks one more tool for printing more paper? What would make these Bitcoin-backed IOU banknotes better than the current fiat currency?
And the next step a bank would do is fractional reserve (print 5, 10, 100 Bitcoin IOU papers for each Bitcoin they own). No.

What you propose is to use Bitcoin in complete contradiction of the reason it was created and be used in the same way the already established fiat is working. I see no usefulness in this. Zero. Sorry.

That's correct. SPV is bad for privacy. I'm sure you've read that here and there. Of course, some servers will be logging, some won't.
But who would host a "bitcointalk Electrum server"? Can you be so sure he won't log everything?

I mean that OK, there is at lest one user here with his own Electrum server, he posted here some years ago and you can ask him for IP. He said he won't log and I believe that.
It's mocacinno with private Electrum Server [bitcointalk members only]
(Maybe it can be discussed that we pay for the hosting and the trouble, if we go on this path. I don't know.)
But the more know about it, the more will be using it, even from outside bitcointalk. So, again, I don't know...

And that ASCII logo can be deceiving. Others may imitate it and fool other users.

Putting the wallet publicly in the profile helps for:
* people seeing an address of yours in case they want to tip you
* people seeing an address of yours for doing business

Although I do have an address in my profile, if/when I receive money in that address I change the address. And I advise everybody do the same.

Even more, it's advised to put an address of yours (and a signed message) in this thread to help recovering your account in case it gets hacked.

Mda, dar normal ar fi sa le raporteze si aia sa-i dea un premiu de bun simt.
Ca brese penibile sau nu, furtul ramane infractiune...

I'll make a list, not only for passwords, instead for losing access to various means of storing the coins.

1. Carelessness, especially from the days the coins worth much less.
2. Overly complicated storing methods.
3. Over-confidence on their capabilities (eg. thinking that they can keep in mind a complicated password for 10s of years).
4. Accidents (from spilling coffee onto the paper wallet to car crash or stroke and brain injury).
5. Storing the wallets on exclusive IT related supports (HDD/USB/whatever) and those getting destroyed or declared obsolete and thrown away.
6. Storing the wallet info in only one place.
7. Lack of understanding crypto, computers, web/services.

The order is.. what came into my mind.
I don't see a proper solution for them. Using/keeping only seed should be basically it, but if one keeps it "in clear", then he won't forget it, but others may understand what it is and steal the coins.

From what I know, Dogecoin is still merge-mined with Litecoin for many years.
This means that Dogecoin miners use ASIC (scrypt ASIC) miners for it, hence the difficulty is high and your attempt of GPU mining will be far from profitable, meaning that the electricity you'll use will cost more than the coins you may receive.

PS. This area is for Bitcoin mining, you may want to move the topic to Altcoin mining board.