Not sure if it was mentioned at some point. Although the game ultimately crashed and burned, I really dug the taunt/guard mechanics in SWTOR's PvP. Taunt would reduce enemy damage output by 20% unless they were hitting the Taunter, Guard would transfer 50% of damage taken to the tank as long as they didn't break guard range. Cover has its niche uses at the moment, but aside from that it really is limited. I would like to see it improved somehow so that Paladins can actually shield people routinely from damage!