I have to admit, I don't like this game. Sometimes you just start spinning wildly and you end up hitting your head. Whenever you're in mid air, you start spinning and the bot always manages to not hit his head somehow.
They should reduce the time you have to wait between shooting, or increase the amount of bullets you can shoot before you have to reload/wait for it to cooldown.
Another mode could be defence mode. One team has to defend the base while the other team has to attack it. The defending team only have a few respawns and the attacking has unlimited. If defending team can defend for 5 mins, they win. If attacking team kills them all and gets inside the base, they win. Winner gets 100 coins and exp?
What would be really nice is if you could upgrade tower to the max (from the upgrades you've earned) on every level. When I go back to do lower levels that I havn't got 3 stars it's kind of annoying that I can't upgrade my mage tower with the teleport ability.