There kind of is, but yeah the element would be neat if we could keep it simple. As for the extra wurly bitz... have them allow kopters to have passengers with ramshackle contraption, or to get rid of it on a double wokka?I think having different heights for flight would add a extra dimension. I like the idea of when its flying low Orks trying to board it from trucks . one gubbin could be a extra werly bit say 10 teef. you could have the option to buy it either as a upgrade or pre built.