Awww man, that literally changes everything :D Having to aum the turrets is quite unintuitive, but now i did get to wave 12 until i died.
Although now you run into the problem, that each round takes forever to finish :P After wave 7/8 you spend most of your time waiting. You could ofc make the tower options more complex so i can think about that, basically i need something else to do in the meantime. Through the limited slots i only have a few possibilites of what is doable, also since the upgrade options are completely uniform. If these are a little bit more nuanced and complex, this wouldn’t be as much of a problem, because then i can strategize what to do next.
Bet yea, this way the game is actually fun! :)