I know you are in a hurry 😉 ... but the site is still not stable at the moment. Give them a day or two to get it back up running after the implemented changed. Thailand and IT ... well, it is what it is. 🙂
Well. Most visa come with a theoretical requirement to be able to proof funds at the border. At most borders even in cash. For example 10k THB in cash for visa exemption, and 20k THB in cash for simple tourist visa. So, lets hope we don't need to carry 500k THB in cash as DTV holders.
Not sure that you can. I translated it from the original, linked pdf documents using Google Translator - for convenience, as not everyone here reads Thai. 😉
No idea. The visa can be revoked, as it is stated in the law, if you breach its regulations. Also, at every entry or at every extension, immigration officers will always be at liberty to re-check all requirements. But that is theory for now.
Might work. Might not (for long). I am worried that with the rules as they seem now, the new DTV will be "abused" and the rules will be adjusted and tightened up, later.
I am German. I have to pay my taxes wherever I choose to become a tax resident (by living there 180 days a year +). Gives me more flexibility than that US world income thing which Thailand seems to aim at. Then there is mutual treaties regarding taxes between countries. It is a very complex topoc - espcially when not knowing the details to come, yet.
I don't know. I would assume they would have to rely on your truthfull tax declaration. How do the US do it - they tax global income, too? Maybe if you want to avoid taxes in your home country, you would need to give them your Thai tax id and then your home country lets Thailand know.