I try to imagine this system more fluid, but not replacing it too much.. I like the pump-action shotgun feel of 4.x Dark Arts..

I think letting DRK hold multiple DAs at once for fast 50% MP draining when we in opener or DEL is approaching.. Removing the 'just one' DA at a time could free up weaving constraint. But also they have to fix the old DA-effects that have no place in 4.x. DA-AD should add +50 potency in addition to absorbing health, and DA-PS should do +140 potency in addition to the aggro multiplier. Dark Mind update where it doesn't take a DA period. I think the future requires no Dark Arts for any mitigation skill. We have TBN now for those needs. Dark Arts is our zerk/fof/req/ir, applied on a GCD basis. That should be it's singular, exclusive purpose.