no need to be rude. Obviously you haven't followed the group enough, a lot of people have been struggling to get a bank account. Kudos to OP for empathizing with that and sharing a solution.
My experience is that of entry with the immigration officer in Thailand. If you mean upon check in with the airline from origin country, then yes, this is a good point to note. My experience is since they see a 5-year visa they haven't asked so far. This is for Air Asia.
The best way to find people's experiences in submitting for an application and getting granted the DTV is to do a search on this group, keywords: Vientiane, Ho Chi Minh, Vietnam, Laos or Myanmar. You already have a wealth of experience from a lot of people if you do a search. And no you don't have to go back to your home country. Good luck.