personally if they are going for how YVOL was, they practically already did all they need to. (I am saying this as a person who played this game like, 5 months ago, think it was pretty great and practically done. I assume they've done more by now and I might check it out soon but idk.
There is indeed a Sonic game (a remake of a certain game) that I want to make, albeit I keep that under wraps until I actually have something worthwhile. No use if I publicly make an announcement right now.
And yes, music and art is being done. Art depends on how much time the artists have which was less time lately. So I use the time I have for a Gallery function right now.