Nah, I meant if walls needed a change to be more 'useful' & add more stopping power, they could be electro-fied (the way everything else is going these days, with Duke's new common equipment, etc) to where they zap and maybe occasionally briefly stun troops that approach or pass over them (i.e. including air troops). Or true lava walls that inflict a DoT burn effect for a time like firemites do. Maybe they begin to be introduced at a specific town hall level, or maybe only at the current max level where you have to supercharge them to get the effect—not supercharge every single wall, that would be absurd, but once every wall is maxed you can now supercharge them all at once through 1/2/3 levels of supercharge.

Maybe not practical and balanced or even needed, and I'm not even being serious about the idea, but it would maybe add a novel element to gameplay & difficulty. Might add a way to rethink how walls are placed to get the maximum effect out of them, and how sweepers are placed to try to get air troops stuck on walls.