They Should Add An Official Damage Meter With One Condition

[SamSmoot]

Make it so you can only see your damage relative the average of everyone else in the group who is within 5 item levels of you.

Display the data only after the group is disbanded. Perhaps offer some analysis or suggestions to the player of they're not using some ability, or not in the correct sequence. Unfortunately, solo rating is only useful for DPS.

When I ran a meter in WoW, I usually didn't review the data until the event was over anyway, since it took too much time to analyze the details during the run. It did have a simple bar graph showing everyone's performance, but I felt it was useless comparing myself to others of different class / item level, which is why a built-in meter should only compare with others of very similar item level. (Same class only is impractical..)

I suppose I could simply stop caring about my performance and stand back, casting one ranged ability over and over, since I don't know if it makes a difference or not.