If you haven't seen the retrosbk spencer replica, you should. It's a cbr1000rr that has been fightered and looks great.
Two ideas that may or may not work well.
I think that a 919 with an rc51 front end, ohlins/penske/whatever rear is a real nice bike. Add the upper fairing of an rc51 treated the same way as the cbr upper in the retrosbk bike and I think you have a winner.
take the new cb1000r, on which I am not a fan of the transformer headlight, and add the upper fairing of an 08 and up cbr1000rr with similar treatment.
Just thinking. If I had all the cash in the world I would consider tackling one of these ideas.