You should be able to take more than 4 babies in at a time, i get that we have passives and active items to help with that but you cant do much with only 3 other towers besides lil chad. Even 1 extra slot would be enough to remedy this issue, also the red flys in the mines suck ass. You have to deliberately leave holes in your defense if you dont have a lobbing tower to kill them cuz otherwise they just go over everything.