Funny thing on lowering stats is that you can already do it without Impact or new spells, /DRK.

RDM has a native Dark magic stat, so you can land Absorb spells on most mobs. If you are looking to buff/debuff better and melee better as a RDM, I would advise you to try it. You even get all the WSs and drain/aspir/stun/abs-TP.

Merged Enfeebles. Sure, it's something we already have and would like to do better. It's like double cast or XMAGIC, so I can understand it as part of RDM.

Enspell 3s that do more damage and debuff elemental resistances even more, yes please. And better on hit animations would be amazing.

Also, I know some people get super jealous of BLU on this forum, but don't. My roommate plays BLU and we work well as a team. All of his debuffs and my debuffs stack. He brings his own refresh and haste, so I don't have to spend time buffing him. Also he can self skill chain and I have a magic burst bonus...figure it out.