I run my healer and constantly get the heavy armor sets.
It's obnoxious. I'll basically have to run and rerun these DLC dungeons that fake tanks drop from group at the start (meaning the run won't happen) until I've exhausted the heavy armor set in order to get sets I actually want... if I actually get groups that will be willing to run the dungeon because a lot of people queue and drop if it's not something fast like Fungal Grotto.