At 70mp, I would hope for a binned 35mp mode that provided better noise (and low light?) performance. Still plenty of resolution for most scenarios. But yeah, as an owner of an EOS R, I'm really hoping for a few things in a camera like this—the return of 5D/7D ergonomics (a few more CF buttons and a joystick), dual card slots, and better rendering.
On the last point, it's hard to describe, but the R's files have a tendency to look "crunchy" and not all that pleasing right out of camera. It seems like I have to massage them a lot more in post to get good results. This is compared to my original 7D and my Fujifilm X-E3. I don't know if it's just the way the camera processes the files or if it's a sensor thing or what, but the color and contrast seem off—not enough color saturation, too much contrast. I end up trying different camera profiles in LR and can usually get good results, but the files are always a bit 'meh' out of camera. Anyone else?