Something could be implemented in such a way that the game client gives players feedback based on what performance would be expected of them in their role in order to beat an enrage etc. I'm thinking healing/damage/threat meters which shows each player clearly whether what they personally did was up to standard based on time spent. Sure it's not effective for a raid leader, but it also ensures that otherwise innocent players are not punished more than they are already by toxic elements of the community. Player imposed PF rules that are higher than the game's requirements are bad enough. We don't need dps snobbery to add to this further.