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

[Cynfael]

Personally I still think that the risk of increased toxicity is worth the potentially huge benefit of helping players who wouldn't otherwise be able to gauge their own DPS performance against some kind of numerical standard.

I would expect that very few players who weren't previously trolls would suddenly become such when handed a parser, while players inclined to be helpful and to seek help would have a powerful tool for improving their experience.

[Callinon]

I would expect that very few players who weren't previously trolls would suddenly become such when handed a parser, while players inclined to be helpful and to seek help would have a powerful tool for improving their experience.

Absolutely correct. A troll doesn't need a tool to be a troll. They'll find a way with whatever they have.

Given that, I'd rather have the tools to improve my own gameplay and that of my group/raid. Just because someone will inevitably use it to be a jerk, doesn't mean it isn't a useful tool.