So how about a new trap. A stun trap. It would cost 50,000 gold to build, have a blast radius twice that of the bombs. It would deal only minor damage, say 10pts, but would stun the victims for 3-5 seconds, buying your defences time to finish them off. Make it available at town hall level 7 . Cost 100,000 gold to upgrade to level 2 and add an extra point of damage and a extra second on to how long it stuns every time you level it up