personally, I'd like to see him do it.. maybe he can get motors that are manned rated and do it right.. u must agree the technology is here., it will be done, better than it has been done in the past, and it may only be used by a few daredevils, but everyone has to admit it would be neat.. also it looks like he might could rotate each side seperatly, a spring to bring them back to parallel or centered with each other. that way he'd have roll axis control or turning control by twisting the thrust as he pushs one control and pulls the other.