IMHO no DD class requires any top skill to play in PVE - don't stand in fire and do fckd dmg - that's basically all. A bit different for tanks and heals though - can be pretty nasty.
Want to show skill - go to arena and take glad, that's where the real skill takes place.
Glad = very good pve player.
Very good pve player =/= glad.
Trust me, m8.