Basic concept is each class can have unique dungeon traits they can learn that would give you a slight edge in the dungeons. The general limit would be that you can't change your traits inside the dungeon however you can change it as many times as you want before you enter the dungeon.

It wouldn't just be like "gain an edge against x type mobs" or "increases defense against x type mobs" There could also be "sensory" traits that allow you to pickup on clues and hidden passages inside the dungeon depending on which sensory trait is active.

So say like you see a discolored brick in the wall but lack any form of trait to sense it, if you had the "Keen Eye" traits active you would pickup on the discolored brick and be able to interact with the object.

Basically I'm just trying to suggest ways in which dungeons can be more then point A to point B to boss. I think what people would also like are dungeons with a bunch of mysteries to solve and unknowns that would take weeks to figure out. It's kind of dull when new content can be figured out pretty fast but the excitement does pickup if you can make content that takes time to figure out all the mysteries behind it, granted I think the Rank 45 dungeon still has some secrets in it but I think the R25 one is pretty much figured out. Anyways, if anyone else has any suggestions feel free to add on to it.