I would like to see an in game personal parser that is based on the traffic light.

Green - Your in the range the Devs want you at for the content. Healers and Tanks do not need to contribute if all DPS are green.
Yellow - Not ideal DPS but operating at the minimums the devs have set. Healers and tanks may need to contribute some DPS if most DPS are yellow.
Red - DPS is insufficient to clear the current content. No amount of healer or tank DPS will help clear the content if most DPS are red.

The meters would be tuned for each encounter the player is working on such as a raid boss or an entire dungeon.