[Gundam-Dude]

there is actually a 6key etterna discord with a surprising handful of people that play

and there are currently four 6key packs in progress, all active:

solo rulz 5 (kommi)
kpop pack (me)
idolm@aster pack 3 (kinx)
vgmp-s (kraezymann)

still incredibly niche though, and nothing will ever change that fact