I think Canon needs a compact APS-H ( 5D body ) whatever it calls 7DII or something else. Bigger sensor gives better IQ and still have a bit reach for outdoor and if Canon keeps the f/8 AF advantage for using teleconverter, it satisfies a lot people.
Yes we can't use EF-S lenses on APS-H ( and comes out an ultra wide angle problem ) but it's Canons problem not mine. I can buy a Sigma DC or Tamron Di II. These lenses are causes only a bit vignette at the corners. But it's not bad at all. And if you don't want it you can crop the photo ( to 1.5, 1.6 ) when you will use it.
For example, if Canon makes a 22 MP APS-H and i have a Sigma 10-20mm DC. When i crop it to 1.5 still i have a 15mm 16MP photo ( x1.6 ~ 14MP ). I think 16MP is enough for most of people. Maybe Canon makes a crop mode.
Of course i'm not a professional and these are my opinions.
(I am not good at English. If i said something wrong, apologies).