Have lots to say about this but leaving space.
In my opinion Rogues should be the best at disarming traps, but if I don't want a Rogue in my party, could there be items or other ways to overcome traps? Could a Fighter or Barbarian be able to stop that boulder rolling towards the party by physically stopping it?
Can 2 melee Strength-based characters be able to open doors at the cost of stamina? (Holding up a closing stone door Indiana Jones style~). Could there be some sort of experimental equipment that nullifies poison traps? (gasmask thing, making you able to just walk over Gas traps like it was nothing).
What kind of traps will exist in P:E and what kind of mechanics will be used to deactivate traps? Will we see more of a Grimrock style? Pitfalls? Spikes? Arrow shooting traps? Or will it be more in-tune with BG with no "buttons" or similar?
Player vs Dungeon. Not really "What enemies are there?" but "What obstacles block the way forward?".