I dont think it would work really, it takes forever to destroy walls and now they do damage, so thats kind of OP, and like others have already mentioned the walls r already strong enough
Well thanks for all the feedback. Personally I think that this is not OP to walls since level 10 and 11 walls are quite expensive and I agree with the others who would think this would make them more valuable. Also this is to enforce wall breakers and start using them instead of troops breaking the wall. But thanks for all the feedback.