DPS display could easily be solved with a system already in game.

[lolnin]

They should make a mechanic in alexander or a new primal where if a dps doesn't meet x personal dps over the duration of a debuff then they get oneshot by the next unavoidable mechanic. I would welcome that dps check to be fairly high as well. It could scale differently per class but it would give people something to see outside of a parser if they're doing bad personally. It might actually encourage better play if it's treated as a mechanic instead of a metric.

Something like this would be amazing as well