I am assuming either the next update or the one after will be the SSSP, but I have an idea for a near-future patch; that is to give us a companion-centric update. Change max affection to 15000 (adding a new achievement to get to 15000), add several new conversations for every companion, put all companions' starting costumes (as moddable) either on the CM or a vendor, and add new customizations for each companion, and a customization vendor on Coruscant and Dromund Kaas and the Fleets.
Companions are cool, but they have enough content to keep cover the main story ground. There is no reason to waste resources on something that has no place in end game.
So no. I would prefer they do class balance in 2.5, EXCLUSIVELY.