Did you ever figure out Focus Targeting on PS3/GamePad users? Its especially useful for keeping track of Boss Duties like Hydra, where DPSers have to lock off Hydra and DPS adds as fast as possible all the while watching out for Hydra's room-wide AOE. I'm a PC gamepad user and the only successful method of focus targeting ive found is to have to set to an arbtrary keyboard binding like F12 or something.