Healers are one troop that never goes on defence cc, mainly because it needs ground troops to activate and once the attacker knows its in there a possible cleanup, would totally avoid it. How about making the healers activate easier in defence?
I posted about this a while ago also. I like having an angel and minions in my CC. As I usually get gowipe'p by TH10s it always worked. One day I finally got attacked by a penta loon and she didn't come out. Since she is not an attacker offence troops should not be her trigger. D towers or hero's getting damaged within CC range would make more sense to me. Unfortunately I think not enough people use this tactic to make a stink about it for SC to rewrite any code. But I would like it.