Certain non force classes are fine at the moment (Vanguard/Powertech, Gunslinger/Sniper mostly). The problem is its just more desirable to roll classes like Guardian. Scoundrel healing is fine for example, but a lot of people would rather roll a Sage healer for almost equal healing effectiveness but at the same time have access to the stun bubble.
I do agree to a certain extent that some of the non force classes need a buff, but at the same time we need to consider changing (or even nerfing), some of the mechanics of the force using class. For example i would like to see the stun bubble changed so the stun only comes from the bubble cast on the Sorc/Sage.