Call me crazy, but I would like to see a F650CS done up as a modern/retro cafe bike.
Nop off that dangling license bracket thing, create a nice bum-stop seat back, some low bars with bar-end mirrors, a little bikini windshield/fairing to add on top of the headlight nacelle, a cover for the divot on the "tank" and get rid of the handles on the tank to clean it up. Oh! and a decent looking reverse megaphone muffler.
Woodenshoe to Cheesehead