Wouldn't hurt to have a demo video. How easy is this to actually use as a WM, and is it any different to say EXWM?
Also, Guile being the implementation chosen is not incidental, the GNU project is moving towards Guile as an extension language everywhere (The big example here would be GuixSD).
This doesn't seem like a user-oriented thing.
It is very "experimental" right now because it's such an early release, but that should change as time goes on.