Yeah, you don't want to end up in SJU on the ATR. It may sound like a great place, but its crowded, expensive and dirty and it really tough. If you speak fluent Spanish and you enjoy the 3rd world country type setting, then it can be paradise. I, and a big number of the people I know that got sent down there, hated it.
MIA isn't terrible - if you don't mind Miami. The flying there is pretty good.
DFW isn't bad on the ATR either.
I figure that when they start hiring again you won't be able to pick your domicile. I think that program is over with. They were struggling to find people to fly the ATR when I hired on - and I don't think they're going to let that happen again.