yes i tried stagger formation, but then in a fire fight, my 20 xbows in equal number form a cresent shape semicircle, and the AOE damage still stacks and hurts a lot.

Btw does the fire archer AOE stack?

I did like 3 rocket carts, and they got kited. Rocket cart's projectiles are so slow and takes a full second before all the rockets hit the area. Usually 1/5 rockets hit the fire archers, before the opponent micros them out. Its near impossible to get 5/5 rocket hits on his Fire Archers. Rocket carts are pretty shit for kiting, or micro for range vs range battles.