just a couple things, you need to be able to change the rate of fire, and there needs to be larger limits (or no limits) on unit/tower customation.
And flying creeps need to make a difference. We need to make towers that can hit flying and those that cant
I use the original 4 soldier (restart until I get a 50+ rifle) and get him Ranger. Then I get engineer, 3 trenches (one up front and middle where I put 2 weakest soldiers as target bags, and two other farther back and on the sides for important soldiers) medic, Bunker, gunman, signlar, Officer. and then I just replace what goes missing.
Best anti-germ tank method are mines... does it every time. 3mines=1 tact point just lay them across the board where the germ infantry don't reach but the tanks will...it owns. (don't walk on them though) ^.^
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