I primarily Tank on PS3, and I can sometimes sort of tell who is doing a lot of damage from the Aggro meters, but it's not reliable. I would LOVE to see the game show a DPS meter or something next to everyone's name in your party.

You guys can hold me accountable for how well I hold Aggro and how long I live, etc, but it is a lot more difficult for me to see if you all are maximizing your potential. I play a BLM on a speedster char as well, and I would love to see my DPS displayed. I feel like it would promote optimization through transparency. Of course some people will be dicks about it, but some people are going to be dicks about everything ever.