Flying Defence

I propose a new defensive structure that is not connected to the ground (but it cannot move around the base). This will force people to vary their army compositions, to add in a bit more ranged units - because as of now there are only a few major army compositions. (GoWipe, GoWiWi, Barch, BAM, Drag). This defensive building can only be attacked by ranged units and should have around 700 hp. The actual building itself should be able to shoot single, ranged projectiles at around 8 tiles in every direction.