DPS Meter
 

I would love to see an addon similar to WoW's "Recount" as an ingame DPS Meter instead of using a 3rd party log parser such as ACT or Rift Launcher.
This would benefit many people when trying different rotations to maximize their effectiveness in combat.

It somtimes also helps to point out when a group or raid member is in need of help to obtain better numbers.
I.E. trying out a Rapid Assualt mode with 3 dps and maybe two of them are barely breaking 400 dps...

Ximm-Rocklift-Cleric Tank