What I would really like to see is a total support dps
A DPS that his really job is to buff the party and not doing dps by himself (only the basic to clear solo, quest content).

Im not a designer myself so I dunno how it should be but casts that make party buffs and constant casts that would make the next attack from a party member X% more powerfull, in this way u would have no need/time to cast ur own sucky skills and you would really have to be communicated with your party buffs attacks.

Anyway its just an idea I always had and would really like, dont think it would ever be made though