Strong as it is in some areas, I can't help but see the EOS R as a lost opportunity for Canon. The company has a well-deserved reputation for pioneering large-sensor DSLR video, yet its first full-frame mirrorless camera falls down against rivals in that area.
Wide choice of adapters for Canon DSLR lenses; Accurate Dual Pixel autofocus; Excellent image quality; Fully articulating touchscreen; Bulletproof body and big grip
4K video crippled by 1.8x crop and max 30 fps; No in-body stabilization; Wonky touchpad instead of joystick; Single UHS II card slot