There's no need for an actual DPS number. A single icon that shows which player has the highest DPS value is all that is needed.

Without it ASTs cannot use single-target buffs like Balance effectively. If it's on and your tank is outdamaging the DPS you know there's a problem, you don't actually to know how much more damage is being done.

Precise numbers just breed elitism but the current system is nonfunctional.

Also, as for people who talk about parsers already being used ingame, you're forgetting the entire PS4 population of the game, intentionally or otherwise.