Xperia T is still a relatively new device. Also, don't count on Samsung's amount of custom rom development, or HTC - simply because Samsung sells 30+ millions and Sony ~10 so it's all about numbers of users.
It's more important to get GOOD developers on our case. If you look at Note 2 roms, there are dozens of roms etc. but how many of them people actually use ? 5 ? 10 ? And how many of them are actually worth using ? You get so many roms with just different images, bootscreens etc. ( no offense to anybody ) I just wish to see good CM/PA supports and some nice stock-based roms for feature enchancement.