Players Who Don't pull their weight.

[Kallera]

There's a line for that though; Should players be able to pass content/boss fights for not actively participating in it? Specifically the DPS for this example.

well a ko is the ultimate form of not participating, should the healer be dinged for not raising? should the party be unable to clear for their fallen friend? so the Tank and the healer have to redo the boss because they are so vital, but the DPS have to redo the whole dungeon because the casters decided today they'll not raise and laugh their way to a slow clear?

hell, Praetorium alone would have problems like this in spades.