Star Citizen is looking pretty damn awesome, and is shaping up to be incredibly popular too. If SWTOR wants to attract a decent sized playerbase, then it NEEDS something unique about it beyond voice acting in quests. Fully realized space flight mechanics should be a no-brainer for the franchise.
Let smugglers run blockades! Give us access to Guild Ships that we can show off on cruises! Let me team up with dozens of fighter pilots to take down Guild Ships from the opposing faction! Create Flashpoints and Battlegrounds around space combat!
I know it's a lot of work, but you won't hit a stable couple of million + subs without something this big and unique. Star Wars without space is like Game of Thrones without female characters.
Yeah, I'm really excited about that game. I hate that its two years out.