This bike almost seems too perfect to touch. I want to eliminate those horrid rear-view mirrors and get rid of the 'cheese grater'. The next step would be a steering stabilizer. I would love for the bike to be louder, I could never decide what the best exhaust set up would be. There's a few really great options and I don't have the money right now to do much of any of this.
I just raised the rear end a bit and it made a world of difference on the road under hard acceleration. I swear the harder I push this beast the better it runs.