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@Lucas*
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We still looking for 1 HERO ....

Well, I think it is indeed too much complicated and harder to use, you have to have knowledge about how it works on internet.

You have to make an account, buy bitcoin from different sites ( which takes 5% to 7% Fees) then transfer to exchanges for trading or to use.

How can a normal people, who usually watch youtube video, use fb or other social media, you expect him/her to know all these things? I seen people give up easily, and think it's too techy.

I believe if Bitcoin sell coins on their official website, with lower fees, such as 1% to 2%, and make  a simple wallet for people to use, more & more people would buy and use it.
What is your opinion on it? discuss..

Of course it can, but for this purpose it is necessary to pass bitkoin through many bans, attempts of regulation, state misunderstandings. Bitcoin should unanimously recognize everything, without trying to subjugate him. Then this system will become one, decentralized, without superfluous intermediaries, fast, safe and anonymous.

The coins that already can be used for atomic swaps are Burst and Qora. At least the Qora client has even a GUI option for that (see this article).

The reason I think it is not widely used is that both coins share a relatively similar codebase (they are Java coins inspired by NXT and use a smart contract platform called "Automated Transactions" for the atomic swap implementation) that is pretty different from the standard "Bitcoin clones" and Bitcoin/Script coins need an alternative implementation. Burst and Qora never were among the "top altcoins".

I think also the creator CIYAM deserves more credits for his breakthrough implementation. His solution is based on a concept invented by Sergio Demian Lerner and improved by Tier Nolan but it's the only implementation I know that is usable by non-technical users.

As far as I know, this is the correct assessment. The tax law can only be applied once the person holding the digital coin will convert his hoard into the fiat money and am sure this is the time that a person has to declare it for possible capital gains (even if given for free or as a gift). This is actually a universally accepted system in applying tax towards cryptocurrency. A person can keep his digital currency forever and not be taxed if there is no movement to convert it into the fiat cash. Now, as in anything in life, we have to follow the law on taxes especially in countries where the government is strict and is always monitoring. People who are not fond  of paying taxes should instead relocate to some third-world countries where the governments are busy with something else.

I am also very interested in the topic and eager to get informations about actual "real" tests that are going on. According to this Spanish article there were tests with Bitcoin, Zcash, Litecoin, Decred, ARK and Vertcoin, some weeks ago.

The traditional atomic swap model supposes one multisig transaction per chain. That obviously isn't enough for high frequency trading but would enable the typical use case of a trader that wants to "ride" bullish and bearish cycles of distinct coins. For higher frequencies, one could use LN, or maybe even a specialized pegged sidechain in the future (RSK?). For LN, however, I think it would be used mainly for small exchanges of less than 50-100 USD because of the slightly increased risk.

By the way: There is a atomic swap system that works for two years now used only by two small altcoins but supposedly could be adapted to Bitcoin-based coins. I have recently downloaded both blockchains to test it soon, if I am successful I'll report results here.

Have you heard of the lightning network? My understanding is that atomic swaps would use that. So, it's highly scalable. You can buy litecoin 100 times over the span of a month using one bitcoin transaction and one litecoin transaction.