Mace/Shield already gives 5 CC abilities. Shield 5 stuns on block, then you throw it for a daze and it comes back for another daze that's already 3. Shield 4 knockback, mace 3 stun. All this without spending utility skills.
All we're asking is for us to be able to combo off our stuns in synergy with the mech. Mace 3 did that really well last beta and now it's impossible.