The Prosperous Universe UI is amazing.
To me, it looks like a *Nix window manager built on web technologies.
It would be amazing if the UI itself could be spin-out as a separate project, under whichever licensing terms you see fit, although I’d recommend open source.
The UI project might develop a life of its own and grow.
At least those are my best wishes for it and I hope you’ll contemplate the suggestion.
Related older post:
Technology stack for APEX - Prosperous Universe Community