We probably would never make a non-English speaking player race. I know it seems attractive, but simply put, hearing alien for way too long drives you crazy. An early build of the game had Tython populated by a race other than Twi'leks, and after about the fourth quest, you want to put a fist through your monitor.
This sounds like an assumption as I've never seen a dev say that. It would actually be somewhat easier to use 4 or 5 already recorded Selath phrases and make the player read. Also what I've always thought they should do for non-basic speaking races is give a toggle as to whether that toons speaks basic or speaks their native language (I'd like them to reverse this for some current races, Twliek for example).
That's all assuming we ever get a non-basic race, which is a giant if right now.
So any races we add in the future will need to plausibly be able to speak basic.