You can set the functions you mention to separate buttons. Customizability is not a problem with the R. And please tell me, how you change and move the focus point faster on the 80D, than on the R.WB change, Spot Metering, Drive, AF MODE (Single/SERVO), ISO (yes you will most likely put that on that ring on lens) .... i cant be bothered ... list is tooo long and putting few option on M.FN button then scroll then press Set then scroll again then press set again ... not quick. And way to change mode ... OMG ... that thing is ridiculous. Also what you want to say is ... "I can customize bla bla bla" where problem is ... i have to make my brain relearn that my options on top of 5D are now on button that is on complitely different place, also, i can do so for only few options because ... well have soo less buttons to do that with. There is a reason ADOBE never changed shortcuts for options in all versions of programs ... speed and muscle memory of users.
And i stand by my 80D versatility comparison. I would do much better with 80D speed wise then EOS R with all customizations combined at some fast paced event with lights that change every few seconds.
You know the 80D and how it operates. The R operates differently. It will take some time and experience to get used to. Yes, you must relearn the buttons in order to match your 80D speed wise. But it can be done.
All this said, I agree that the EOS R needs refinement. The DSLRs are more mature and better thought out from a usability standpoint, and I (still) prefer how the DSLRs operate. I am curious if Canon is all in on touch and drag focus, or if they will put a joystick in a future mirrorless camera. I think the touch and drag focus is more effective, but a bit more cumbersome/less intuitive in use.