I find it a bit strange that the Super Power Jetpack makes noise. I know that it’s technically more quiet than the normal jetpacks, but does Superman make noise when he’s flyin’ all over the place? I thought the point of the SPJP was for people who don’t want to actually use the jetpacks but get the benefit of flight. It’s not like the concept of a silent jetpack is completely bonkers, the fly wings only make a subtle noise on take off and after that, they’re silent (when really, they should be the buzziest!).
My suggestion would be to either give the fly wing sounds to the SPJP, or just not have sound entirely. I don’t think making them silent would affect the competitive meta much.