1. larger camera? Heck no, make it smaller if possible. Get an SL1 if you want something larger.
2. Minimize buttons? Another big No. Camera needs more, and higher quality ones, similar to the DSLR controls.
3. Built-in EVF? No way to the EVF. Wireless display yes, headset accessory, sure, integrated EVF, yuck. Again get an SL1 if that's what you like, or purchase the accessory.
4. Full Frame? What about Medium Format? I think they need to stick with APS-C until it's more accepted. No sense digging a bigger hole.
5. Dual Pixel AF can already do this can it not?
6. More lenses, sure...
In summary, the camera should be small, thin, and robust, built like a pro series DSLR.
Do away with the cheap buttons, and focus on quality. Solid jog dial, customizable buttons that provide feedback.
Phone App with wireless display, and data bridge. Think TriggerTrap but with so much more. See what you shooting on your phone in live-view. (great for remote applications.) Hold the camera under-water, but see what your getting on your phone screen, (or headwear) etc...
Attach it to a drone, and use it as a live-view.
Open up flexibility for pro's, so they all want one. Don't just dumb down a DSLR into a chunky over-optioned pile of an existing product from 5 years ago.
Seriously, is it that hard to innovate?