I always just let em do their thing. Stupid low dps/under gearing/bad skill? Meh. Since you can't fart anywhere in eorzea without buttercupping at least 5 of em it really doesn't bother me anymore becausei ts not like the odds of getting the same bad dps twice in a row are as high as getting the same bad tank/healer. But yeah, the number of times I've seen dps wearing tank accessories just to meet ilvl is pretty dumb lol