Would you like an in-game parser?

[Zojha]

If people start abuse the DPS meter, more people will deactivate it. If people does not abuse, probably more people will activate it. I think this can work.

The most likely thing to happen is for people to ask the people who have it disabled to activate it and quietly issue a vote-kick if they don't (Or, just leave the group themselves - the penalty for doing so is negligible). Why? Because the underlying assumption is that everyone who hides it is a bad player. I don't think we'd have this discussion if "opt-out" was considered an acceptable solution, because one of the motivations for wanting a parser is to find 'bad apples' and remove them.