Since they're going the radio route on the flashes, how about a radio controller in the body?
A modular camera where you pick 1 of x bodies, a sensor, a buffer-- feel free to add to the list--and when you're ready ( i.e. "have the cash"), you can upgrade the component of your desire. So as tech evolves, so does (can) your camera.
And spare me the, "Canon won't 'cause they're greedy," crap. The ability to upgrade part of your camera would force other's to follow suit.