It's very unfortunate to see Mintpal going down with people's coins/money.
I had only 5000 dogecoins left there so I am safe but I still feel pain for other people
It's time that we don't trust any exchange for keeping coins, just trade and withdraw immediately.
If everyone did as you suggest there would be no standing market, only auctions nevertheless
1) how safe is the wallet you transfer the funds to?
2) if you transfer it to any wallet that has internet access you have a potential problem,
3) is your computer wallet password protected?
4) is your computer wallet hackproof?
5) can your computer not get destroyed, vandalized, or stolen?
6) can your paper wallets not get lost or destroyed?
please tell me that you have 2 of 3 multi-sig paper wallets and that each of the signers have at least two places to retrieve their respective codes, then I will know you have a safe wallet.
With that in mind, there is no practical way transfer in, out, back, forth and at the same time maximize security, you would loose so much time it would not be worth the savings of not doing it and getting ripped off a bit. The bottom line is in the CC business you must leave room for lots of loss, regardless of how that loss occurs: via clicking error, stuck transactions, lost deposits, scams, hacks, exchange failure, all the way up to developer mismanagement or just missing.
The safest way to deal in the CC biz is the least profitable way, not just withdraw out of exchange everyday, also to withdraw out of crypto everyday.
I know there were people foolishly trying to get mintpal's bounty of 1.25BTC by doing 100BTC worth of trades. In order to even consider that you had to commit many resources to the effort: lots of funds, lots of time, and lots of energy. All of those people got screwed so hard they are mince meat right now.
Because of all of the scams, and all of the general dishonesty the CC industry is not growing as it should and rates keep falling instead of rising.