I love the Texas Wanks on here, as I am contemplating my own ATL Texas Wank. But it seems any ATL Texas always has its POD being sometime after the 1836 revolution and "independence" from Mexico. And the main problem with that POD as has been pointed out is that the Republic had too few people, resources, money, etc. to really be successful in the long term. As such, we see TLs where Britain or France prop up the RoT in order to provide stability. yeah, it could have worked, but I see most of these Tls as being really ASBish.
I am contemplating having a POD much earlier, which of course will change all of Texas history, and probably butterfly away everything from Mexican independence in 1820, to Stephen F Austin, to the Alamo, etc. But thats what is fun about creating ATLs. Hopefully, I will start mine soon.