See if your still saying that after the first zombie vulture explodes in your face, think about it, there they are happily circling around looking for a dead deer when they smell meat flying past. They charge straight for you but as soon as they get close the static electricity being generated by your rota ignites their decomp gases and you spend the rest of the day picking vulture bones out of your beard. How much more intense do you want it?Aircrafts, blimps, gyrocopters: they would make the gameworld much smaller (way quicker and safer to traverse).That can also be a problem game-play wise. (next to technical difficulties updating the world)
Is can become from a fun activity to a dominant strategy that makes the game feel less intense than it should be.