I just had an awsome idea. What if you could place spining rotors on top of builds, and would hold them in the air! If the rotor is destroyed the whole build will fall apart. (If a weapon destroys it it will respawn with the wand it wont.)
And the rotors will only hold up a certan area, like one rotor per 32x32 baseplate, so the bigger the build, the more rotors you need. What do you think?
