Nice. You seem to see the problem on "this" side. BW has nothting to do with it.
What? You don't think that won't be said if SGR Companions are only made available to a couple of classes?
If they make it so Jaesa is the only female SGR on the Empire side, people won't be saying "But I want Mako for my BH?" or "But I hate playing SW, I prefere ranged and/or healing!"
Edit: Oh. I see the problems from BW side. They should of put in a few SGR companions from the beginning, said screw it we'll spend a bit more, and then they'd likely be saving themselves a lot more headaches.