So how will the MII differ from the incredibly good MI?
I guess better heat handling is an obvious improvement, but for us primarily still shooters, that's not a big deal. I'm not looking for more resolution; 40-50MP is the sweet spot in my opinion. Rather, I'd like to see a 45MP stacked sensor implemented to reduce rolling shutter artifacts, improve responsiveness, and make the already excellent limited blackout disappear. 20fps is plenty for me, but more options (e.g 10, 12, 15fps), and a fake (selectable?) shutter sound in ES mode would be desirable.
In short, I'm not looking for major changes but, rather, for a more refined camera. My R5 is my most enjoyable body (I shoot the Nikon Z9 as well). I think that if Canon makes the user experience more enjoyable with the performance improvements mentioned above, a lot of R5 users will be willing to upgrade.