Problem with that is that it wouldn't change much.
For weaker enemies, just kill them.
For stronger enemies or anything posing a challenge? Just do what you already do. Break the armor and then CC to death.
The problem here is simple: You should not be able to perma CC something to death with a chain of abilities. They should have some recourse for letting them escape the chain or something.
I liked how it was done in Epic Encounters mod: after a hard CC breaks enemy becomes immune to that type of CC for a few turns.
Being able to CC lock also depends on how easy it is to break armor. If my suggestion is implemented it won't be affected by direct damage anymore. So the only attacks affecting armor would be skills like chloroform. If such skills had long cooldowns and all bosses had preservance it'd be quite hard to perma-CC enemies.
