i mean the cannons are meant to fokus on actual THREADS. do you really want your bolts go to waste on GREYDWARFS? i just told my cannons to fokus seekers which can actually reach my base no matter what. most enemies cannot even reach it so why gun em down? waste of ammo.

choose them to fire at things you view as a danger to your base. brainlessly fireing at everything is useless.

and by doing the above you also dont get shot by your own cannons anymore.

and it gives trophys some usefulness i guess. better than nothing. and still requires player to think of what to do instead of beeing braindead.