CC is what makes the game interesting. Removing it is akin to dumbing down the game and getting rid of what makes it so unique and interesting.
Stun could cripple your ability to move, for example, but you could still fire an arrow or cast a spell.
That already exists, that's the crippled status.
Right now most CC just make you skip your turn (Frozen = Knockback = Stun, ... etc with only minor resistance variations).
Those are very different, since they are prevented and cancelled using different ways.
