Mmmm no, if we take RDM past experience DRK will be delivery more weaker in some areas just BCS they have a Res, it will depend of how much the skill work, if it have a cast it will be redundant BCS we don't have siftcast, and if is instant will depend of the recast or how much resources consume, in any case DRK performance will be affected and probably nerfed just BCS they have a Res.

And I'm not fan of every role having res.