Tutorial on this is solid for teaching the player how the game works.
Level designs ultimately feel like big empty boxes. More terrain or destructible miscellania would be good for alleviating that feeling.
Engaging enemy tanks at melee range is extremely overpowered and allows easy kills through commander window.
Tutorial for equipping new weapons would be good.
90mm cannon is a lot of fun.
Tankgame starts at 2hrs 17mins:
https://www.twitch.tv/videos/2250376964