If you want to leave control to the CW and give dps to the new class so do it, now you are simply killing a class. And i'm speaking as a debuff DC and a control lover CW; I want to use DC for help my team, CW for control (if you want to took away my dps give me more control cause if i cannot kill them i have to make them…
I think changes are too hard fro DEF, 25-50 is too hight but 5-10 is really too low, just do 15-30. I think the grow of the DEF with tab is the main power of this ability so you cannot destroy it