I was enamored with the leveling experience, but the end-game is a direct copy of WoW's, only with less content and significantly more bugs. The daily quests are beyond bland and lack immersion, the absence of a global LFG is crippling, and Ilum is arguably the most horribly executed idea in the history of MMOs. To make matters worse, there's no dual talent specialization. It's mind-boggling to think that in this day and age I can't switch between tanking and dps, or PvE and PvP specs on the fly. I started that mind-numbing Battlemaster grind and gave up around hour 300 of Huttball.
In my opinion, WoW does WoW better then SWTOR does. SWTOR is everything that made me leave WoW, only they do it even worse. That said, there's no way I'm coming back to WoW. You couldn't pay me to come back to that game.
Hopefully I get in the GW2 beta.