The MMO part kills it for me. As a long time fan of everything Bioware (from Baldur's Gate to Dragon Age and Mass Effect) I absolutely adore the original KOTOR and to a lesser extent KOTOR 2. They were really awesome single player RPG epics, and I can't help but feel that if you put that into a multiplayer context, you're giving up one of the most appealing elements of the game.
It is sad that we are seeing less and less of these huge epic single player RPGs. All we had this year was The Witcher 2, Deus Ex Human Revolution, and of course the really big one Skyrim. Though all three of those games are REALLY awesome, three is not enough. The massive failure that was Dragon Age 2 does not count.
If you could play The Old Republic like a normal single player KOTOR game and ignore all the multiplayer stuff, then I might consider playing it. If it has a subscription fee than I am definately NOT playing it.
All right you primitive screwheads, listen up...