I have to agree with many of the others. To me, the Concours is plenty powerful enough to do anything I would ever want or need. And no affordable ST can currently out perform it. I am more focused on reliability, efficiency, and comfort, which is what VVT, lower end tuning, shaft drive, etc offer. The Concours offers an excellent combination of power/performance, fuel economy, and drivability backed by the industry's best warranty.
If Kawasaki wants to be creative, they should listen to the myriad of suggestions on the board, already- things like CRUISE CONTROL, HID LIGHTING, more adjustability for bars and seats, 100% LED lighting, built-in tip-over protection, and refined KIPASS that lets you unlock EVERYTHING without a key, not just the ignition. And consider options for even more stuff ST riders often want: alarm, nav, com, and convenience lighting come to mind.
Of course, I am certainly not opposed to increased power, as long as it doesn't come at the cost of reliability, efficiency, and comfort.