Many great ideas here. It got me thinking... Does anyone remember when "Pro" hardware signified not only top of the line specs, but also a system which was user upgradeable?
Picture the difference in user upgrade options between the iBook (clamshell or white) vs the PowerBook G3 and Titanium PowerBook G4 - These pre-Aluminum PowerBooks were a cinch to work on for replacing hard drives, maxing out RAM, adding external peripherals (Firewire, USB, VGA/DVI, PC Card slot, etc) and in the case of the Wallstreet, PDQ, Lombard and Pismo, the CPU daughter card was easy to replace for something faster.
Even more-so, the iMac vs the Power Mac. In any of the G3, G4 or G5 variants there was a major reason to go for the "Pro" machine and this was expansion and upgradeability.
As
@RhianB points out, let's imagine a top of the line MacBook Pro with easy access to a hot-swappable battery, perhaps twin SSD slots, easily accessible RAM slots and a slotted CPU upgrade path.
Forget about the Touchbar (and further gimmicks like ASUS's Zenbook "Touchpad", which is a mini secondary display behind the trackpad). Let's get back to the core of what makes a "Pro" machine... To me this is a high performing device which I can invest in now and expect at least 6 to 8 years of expansion options, upgrade paths and ongoing software support.
I would also fully support a shift to Apple's ARM chipset. At least for the portable range. This could certainly give the Mac an 'edge', much like PowerPC provided during it's heyday. Surely Apple could invest their billions into beating Intel at their own game.
There was a time when Mac users were proudly "Thinking Different" and this differentiation between a Mac and a "PC" was more than just the price tag and a gimmick or two.
The shift to Intel was good to sort out supply and performance issues with the IBM and Motorola chips, but I believe the Mac deserves to be in it's own category again. To stand tall on it's own without needing to be able to boot Windows as a selling point. If we want a Windows machine, we can spend far less and buy a great little PC notebook, so why does the Mac need to be able to run x86 software?