The owner of the group got notice from immigration that for extension purposes, foreign women married to Thai man will remain the only ones who do not have to show financial proof. All other marriages will require proof of funds. Thai male foreign male, thai female foreign female, Thai female foreign male.
I've yet to hear of anyone getting a visa or extension within Thailand based on same sex marriage, but based on the immigration policy, I would not expect there to be any preference to any other marriage type except Thai man with foreign woman
Never send in things that are not asked for. You're more likely to complicate matters than simplify them.
Also, even if you did send every page, they would likely ignore it at the point that you sent it in, then when they wanted it later on they would just ask for it again.
On top of that, the "purpose" of asking for every page is an attempt to catch you doing something wrong. If you already sent every page of your passport from the beginning, that defeats the purpose. At that point they would just ask you for something different, like proof of receipts and photos of your location.
There's no "easy" path to permanent resident. But out of everyone, it's foreign women married to Thai men that will meet the least resistance. But that takes years, and it would have to be completed before the spouse dies or else their application would be cancelled.
If your visa is based on a marriage, and your spouse dies, you can remain in Thailand until the end of your extension. After that you either need to apply for an extension based on a new reason, or leave Thailand.
Anonymous participant Just based on questions people have received when entering Thailand, it would be best to apply in Australia if at all possible.
Some people have been asked "why didn't you apply at home?" rather than a country near Thailand. It just looks better to them. That you planned it out and you are legitimate, rather than someone who was already living in Thailand and then got the DTV just to continue doing so.
You cannot apply together. You must have yours before she can apply for hers. One of the requirements for a dependent DTV application is the already issued DTV of the sponsor.