I know how it works. Had a look in detail at their system / screen, once. Just saying as long as the passport in "clean", they won't always scroll through all the details of the IT.
Yes. The DTV is an extended version of the METV. That is exactly what it is. Crazy as it seems. The DTV isn't meant for residency (though people will use it as such), just for longer stays of tourists working on the side back home, or doing "soft power" leisure activities.
I will still be aiming for the LTR by the way, probably just using the DTV for now. The more I look into the tax changes, the more I find the explicit tax exemption of the LTR on foreign income valuable.
I understand the difference to the LTR, with which you never have to leave Thailand for the whole duration of that visa (the inital 5 out of 10 years). Let me instead do a comparison with the Multiple Entry Tourist Visa METV instead - as that follows the same mechanism the DTV will. With the METV you get a (multiple entry) visa that is valid for 6 months starting at the date it is issued. Within therse 6 months, you can enter Thailand unlimitted amounts of times and will be stamped in 60 days at each entry. And you can optionally extend you stamped in stay for another 30 days at immigtation for a fee at each stay, if you so choose and want to avoid having to leave Thailand in order to do another entry. This is how a multiple entry visa works. For the DTV it means accordingly: You get a 5 year visa, and within those 5 years you can come to Thailand unlimitted times and will be stamped in at 180 days each. The LTR is a different beast here. With the LTR you will be stamped in for the whole 5 (initial) years and a need for a re-entry permit is waived. The LTR is not technically a multiple entry visa, it is a long term visa, with the need for a re-entry permit waived should.
No. It is 10k THB once for the whole 5 year visa, when you apply for the visa. You never have to pay again as long as you leave Thailand every 180 days. You are FREE to return then for another 180 days as often as you want to.
Agreed. Although I think they should have gone for more of a middle ground between the LTR and what the DTV is now. Or just improved the LTR instead of starting yet another new visa.
Entering with different passports won't be a problem in general. It could become one, should you try to use a combination of both in a way as to circumvent certain limitations (e.g. max 2 land border crossings on visa exemption per year). And theory aside: as long as your presented passport looks "good" (stamp / travel history wise), I doubt most IO will check deep within their computer system.
Thailand partly attracts the "wrong" kind of people, indeed. But new visa like the DTV might serve as a way to help recompose that towards more quality visitors - if the requirements for the visa are right. Not sure they nailed that with the DTV thus far. They did with the LTR - which is a bit too narrow, while the DTV seems too open.
And that is what it is (for now): a multiple entry visa, with which - within 5 years - you can unter up to 180 days EACH unlimitted times and not pay again (unless you optionally choose to extend in-country).
Really depends on where you are from. I would always advise to choose one from your home country. This way, in case of dispute, you know your legal rights and have a better chance of enforcing them.