Everyone loves to know how well they are doing for DPS, but having actual numbers to throw around is a bit obtrusive, just a thought but a DPS gauge showing you, and possibly your party how well you're doing would be nice.

Here's the idea, give the player a UI module that shows a bar much like the hate meter does below your name, base the bar around the run's "comfortable" dps ceiling (ignoring high numbers that are maxing out the meter within a given range so as to ignore excessive dps to prevent arguments ect). No actual numbers are needed, just a rough idea for you and the party to see if you're doing well enough or with-in acceptable margins.

Basing DPS off the hate meter is redundant, because your tank may not be pushing enough enmity in the first place. As a comprimise, I think this would work very well, and help to improve quality of life in the game overall, without even needing to know exacts.