LT and DSTs help with annoying stuck mobs
You can either have your builder hermit and warden out at the same time or try to offset the build to let everything be within range of the buff beam and Tower Booster, your choice. the weakness effect of the Shroom pit and mushroom tower stack so it can shred EVs
Had a run end to a random golden orc on the north-most tower, so you could always angle one of your LTs towards there if that is a consistent problem, only happened to me once, though.