I agree with perplexing. Unit volume is going to be a real sticky problem. The real interesting mega glass for the R is a decent bet - coming out with identical f number focal lengths a bit smaller doesn't lend itself to be lens sales, just adapter sales, and only 1 of those per camera.
Beginners, etc are being "held" by improving cell phone imagery. So I see the M6.2 is quite the little beast even if I have to put a couple of small batteries in my pocket (Not a BFD) and a powerful step for the beginners/upgraders from cell imagery - even w/ the external EVF. For the beginner I can see them sticking 2 or 3 M6.2 in the pocket in ziploc bags and who cares if it isn't weather sealed, hence why I think it forms the bottom of the spec list. Someone comes out with an EF to M adapter w/ slide in filter or smart ring and one gets a jolly capable package (magic lantern guys could make the smart ring work - but I digress)
Back to unit volume. Binds up the product planning at Canon. Too much video and the C line has to get moving (waiting for the global shutter event - that is IMHO their next game changer). The "Pro" R isn't a camera, I think it is a pair. 1 for folks like me who are pretty happy in the 8-10 FPS but would really like to see the giant pixel counts. (I do like crop zoom w/ the right glass - makes my kit smaller or much greater reach w/ a single body). The other is the giant FPS rate keep the same or even lower resolution for the uber FPS with focusing, etc, etc.
Canon is in the biz of separating us from our money. They have an nearly (not quite completely) overwhelming market share. They aren't likely - other than glass - to leap to the front of the spec list race.
I am hoping for the giant MP count and 8 fps. I am most likely doomed but....
My history if you are interested:
My go to is an aging 1dx and my "oh yea I don't need to take the 5 pounder..." is the 5d3. Long story short, I bought it used cheaper "net" than I could rent for a 2 week trip, but I forgot to sell it. I have rented the 5dSr and the Sony A6500. I really like mirrorless. I really like the 5DsR for the resolution.
My interest in mirrorless? The answer.
I was with photo friends at the world class birding site Blackwater Drive/Merritt Island Refuge with both the 1dx and A6500. Some bird flew by and EVERYONE had a chuckle when the 1dx "went off" at 14 FPS (they all have 5ds) and they were 10 yards (meters) away. Swapped to the A6500 and one meter away after a similar event I said "got it" and my buddy asked incredibly "you shot?" effectively silent. For wildlife, golfers, weddings, etc. The silence of the mirrorless was just game changing - Anything other than football or perhaps hockey the 1dx/Nikon equivalent has got to be distracting. I suspect you could get away with mirrorless at a golf tournament if you where 20 meters away - plenty close w/ a 70-200.
I saw the post about not liking the freeze frame of the R when shooting continuously - I find it less distracting that the OVF blackout, image shift, etc. For subject panning/tracking purposes, I kept both eyes open.