The 600s seem to have gotten to a point where you won't get anymore from the engines without sacrificing reliability... Euro IV and etc doesn't help it either. I would have liked to see a much lighter bike though, IIRC the CBR600 was the lightest 600 for a long time after 2007, would be good to at least match that weight. But again, heavier/bigger exhaust, ABS and etc mandatory so things are just getting harder and harder.