That's a good point with the MF switch, I just haven't gotten used to it, when I need to switch back and fourth I usually hold the camera differently and keep the left hand on the lens barrel vs on the side handle, plus I need it there anyway once the lens is in MF because I need to use the focus ring on the lens to keep focus from that point forward.
The R8 actually has nothing I want, I don't need a FF sensor for anything that I do and the R6II has nothing that I need. My camera purchases are done hopefully for at least the next 3-5yrs. I have a dedicated photography camera (R5), dedicated hybrid camera (R7), a dedicated video camera (C70), a dedicated time lapse camera (Canon Rebel), and a dedicated action camera/underwater camera (GoPro), between those five there is no project I can't shoot that comes my way and if I need more for a specific project then I will just rent what I need.
I wouldn't mind upgrading my timelapse camera to a body that uses the same batteries as the R5 and R7 but the Rebel is so good at what it does (3000 pictures when the battery grip is installed) that I have never needed to swap batteries on a shoot; plus I don't want a more expensive camera that is usually unattended for hours at a time so its a small loss if it gets stolen.
Of course production companies and TV stations are not using the cameras we discuss here, they have completely different requirements, teams of people and gear to properly rig and support their cameras, and the budgets to match. My niche is event work and all of the little projects that don't have the budgets for that sort of thing and fortunately there's tons of options these days that makes my job a lot easier.