I've seen and mentioned this unique situation a lot over the years but now there is a perfect fix that wouldn't change any of the design ethos of the P6. It would just be a single additional setting for Local off.
All Off, Key/Wheels Off, On.
I was lucky enough to spend a few months with the Pro3 and it was a much better hub of my production. I am going back to the P6 because I simply love it, but its going to be a lot harder to integrate it into my daw workflow.