you can’t even open a Thai bank account with a DTV visa. The rules for the DTV are crystal clear that you need the equivalent of 500K THB documented. Not actual THB. Perhaps you are thinking of a Retirement visa.
It’s 4-/2 years away from any current DTV visa expiring. A whole lot can happen in that time in government positions and policy. Not sure it’s worth the effort to spin your wheels about it now.
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