@Kumakun I would be down to do beta testing! My schedule is a little weird, but I can be on nights. I love love love Cyberpunk RED and was a big fan of 2020.
I agree with @Ganymede about rules lite. Neon City is good, The Sprawl is good (though trying to adapt a powered by the apocalypse game to MU* sounds a bit painful, plus it's an old PBTA game, and it's definitely showing its age).
Newer players who aren't familiar with the source material may only be familiar with the more streamlined attribute/skill system in the video game, so that could be a benefit when doing systems work. You could even go Ares with it, modifying stats to fit the core Cyberpunk ones, then just use the proprietary system with AresMUSH.
Another option would be CY_BORG, which is a cyberpunk version of MORK BORG.
I don't think I would suggest Sprawlrunners or CBR+PNK, as those are a bit too light on the rules - and the latter is designed more for the "one last run and then I retire" kind of character.
Really excited for more cyberpunk stuff! I need reasons to procrastinate on dissertation!