If you want to be an annoying tank you can go with focus tree.
Viable dps is Vigilance and you still have a bit def abilities with dmg ones.
Tank and not bad dps is Defense.
But im only level 27. Can't be sure about endgame PvP.
I always complete class quests and level with PvP. Cause if you had enough time with MMO history. The only thing that can excite you is class quests. Side quests are just the same...
OFC NOT !
Stop thinking about things by only your point of view.
When you go to a flashpoint, you can see people are slacking or not with dps meter. And also you can see yourself with different rotations and which one is the best.