New game in production called Defensive Action, TD style combat, reinforcments, characters XP and upgrade system, Powerfull enemies and Endless rampage

Seeking out to gamers for any suggestions regarding in-game features before game completion, game is 60% complete but can still hold modifications and improvements

The game includes:
-A master unit under the players direct control
-Several reinforcement troppers, tanks, artilliery batteries and aricrafts
-Resource usage, as all reinforcements require resources such as ammunition
-Only 10 waves but each with increasing diffculty, new creatures at each and a numbers jump
-Real time unit upgrades and reinforcement
-Various enemy types and styles of combat

If you have any suggestions please leave a comment, OR DIE!!!! (or not)

With regards, IhabN