Good thing you added vertical movement for the big gun - using it became fun, but there is no reason for artillery to not be able to look up at 45 degrees
Withot a coax I think you need to put secondary weapons on space as well, using flamethrower or rockets would be much easier
Cool that you allowed to play ordinary tanks. Check their colliders, Im pretty sure I got immobilized and killed by infantry bullets
Still my biggest issue with the game is movement - it feels very unsatisfied and lenten(?). I thing the biggest reason for this is the lack of drifting. Please research the physics of old arcade racing games