Elevations

Why not add elevations to the game? Use builders to raise (or lower) the ground. This would add a whole new aspect to raiding! Ground troops would use stairs (places by the defender) while flying troops wouldn't have much trouble. Cannons could fire downward, by as many elevations as there are, but couldnt fire upward. Archer towers and wizard towards could fire anywhere!

I like the idea, but air attacks have already been super OP since the lava hound, and this would just demote ground attacks and promote air attacks. maybe if the ground troops didnt just have to use the stairs?

This will literally and figuratively put this game on a different level.. which is bad. It is bad because it is an added layer of factors that need to be recalculated over the entire combat system, just to preserve gameplay.

Not to say it isn't a neat idea, I remember when Sim City did this, and thought it was really neat. Problem is, we can't drastically change Clash of Clans this way. It strays too much form Supercell's model of what CoC is.

This could be added in another game they make, but the boat already left the dock for a feature like this for CoC. It is such a fundamental factor that you have to plan your game with that from the start.