>Not sure what that will look like but it's happening. But I hope it looks and works like Grasshopper's UI which is already very nice! :) So I doubt anything is really "impossible"...

Jonah here is an example of how Rhino's GUI look on a Ribbon UI http://vimeo.com/4742355

Also I have been using Rhino OSX and is really cool that they do not compromise. They are making a real OSX app following Cocoa UI guidelines closely...(not a clone). The only problem I see the winRhino users may get jealous :)