i found a way i always hit the damage cap and even more, you put that bouncing thing in one end, above it you put spikes, next to it you put that cannon, and you put on the -wall- 2 more spikes... -very- fun ( and relativly clean!) way to win every stage
it's nice and has some potential. i understand the passive controling system, many games has it and it can be great (i.e. Settlers) you should make the tank building/upgrades system more versetile, make the upgrades none liniar, like you have short and long range cannons, so play abit more with it, make upgrades that makes you think how you should make your tanks, make it worth your time to make strong and fast close ranged tansk and weak and slow long ranges, and so on...