This would finally solve one of my biggest heartbreaks with the iPad...
Not that it would be more powerful (it would be), but that the iPad Pro could run macOS and the “normie iPad” could go back to being a dead-simple experience.
With the iPad 1 and 2 I was shouting from the rooftops “get your parents an iPad, get your grandparents and iPad, get every non-tech person an iPad!”. When it came out it was opposite an overly-complicated industry with the majority of new users being terrified of pressing a button that breaks something. The iPad was a genuine solution to that in a way that nothing else was (and even now almost nothing is, including the iPad).
Let the Pros have macOS and everyone else have an elegant intuition-focused iOS.