How about red AF points that you can actually see on dark objects in AI Servo
Where's the challenge in that :-p ?
and a built-in radio trigger for Speedlites?
Probably a model policy problem: More expensive metal camera bodies cannot have it due to transmission/range problems, and so cheaper plastic cameras like 6d/70d can't either...
- full size still picture possibility during video recording
Fyi: Magic Lantern already has full res silent pix - though the shutter speed is unfortunately limited. But then again, it's free and available right now.