Crowd control needs diminishing returns because getting stun locked to death repeatedly is zero fun. Where is the skill in that?
Please take a serious look at the ridiculous chain interrupts, launch, knockback, fear, ect. ect. that is being thrown around. Stability, you say? Maybe if boon strip/corruption wasn't in EVERY match. My stability is gone as soon as I use it. There's nothing to counter the stun locks.