For me, figuring out how to make rotors with vtol nozzles, rotators, blades(wings), and a vtol engine was very fun but i am somewhat over the novelty. I've made a swashplate out of these items and have had some success but I can't make them completely stable. Modifying the game for real helicopters would be incredibly different but in the mean time I would like to see a turboshaft engine and some sort of way to make a drive train. All the other engine types are there and I think it is just the natural progression. Also I do enjoy making my own swashplate but rotators are just way to big so a smaller .5 by .5 rotator block would rock. Also a blade option instead of wing. All my natural rotor designs that only use nozzles for rotation can never apin fast enough to generate there own lift. A blade that produces this lift would be nice. Or faster spinning rotators.