Feedback:
Changing pentagon units into circles will probably look better, at least without aliasing artifacts.
Anti-aliasing might be nice to make it look better.
PLEASE LET US GO BACK DOWN LEVELS, clearing a level doesn't necessarily mean we get money faster on the next one. I make the most amount of money pumping out units and fighting equally with the opponent's factories to farm unit kills/deaths. IT IS VERY PAINFUL to try and recover or get money if I do something like, put all factories on one side to blitzkrieg while stalling the other side.
PLEASE LET US RESET FACTORY UPGRADES (i don't even mind if I lose all money invested into upgrades). It's very painful to deal with upgrades that just make it weaker. Especially when I have a tank factory that spams HP-only units, and I misclick ranged or something by accident.