if possible, can you make a upgrade that slows down your shit when you stop and add achievements... if your lost on what to put as an achievement, just do stuff like, "first kill" "100"destroyed" "all upgrades brought" and this may sound too much and I'm not sure if you'll put this in cause I'm saying alot but with the achievement, you earn skill points and use em to buy special things like "mini ships to help you"
I know its alot to ask put please at lease put the upgrade and achievements hope the developer reads this
 "Knightmare Tower"){kind=icon}
 "Idleplex"){kind=icon}
 "Sandbox Hero"){kind=icon}
 "Upgradaroids"){kind=icon}
 "Just Chatting"){kind=icon}
 "Achievement Unlocked 3"){kind=icon}