"A level 10 would be doing something like reinventing the ribbon from office, which might be more of a gtk+ task than a libreoffice task, and the libreoffice guys might not even think that's in their domain or their problem."

I think 'reinventing the ribbon from office' is exactly what I don't want as a daily user of Libreoffice/OpenOffice. Surely we can have a competition to find a new paradigm for an office UI? Ubuntu searchable menus (HUD) coupled with execution of the command from the search results would be something I'd be interested in.