How's the PvP? I have a standing invite with an old guild from many mmo's and may sign up if the PvP is worth it.
Eh, it's okay. Once they get lag under control I think it'll improve drastically. It'll take a couple weeks/months to streamline the client server interactions to WoW's level of finesse.
The balance so far I think is very good. As a Jedi Knight/Smuggler I can take on any class 1v1 and any class I've come up against, if played right can take me down.
Early level PvP is tough and next to impossible really if you're fighting higher levels, even with the bolster they have stats and abilities you don't. So I'd wait at least until your 20's to start PvPing.
I actually rather enjoy Huttball. (Of course, being a Tank helps survivability.)