They are spending a fortune to understand what Pros need, while we have been screaming for the better part of the decade: lots of user accessible RAM, storage, PCI & GPU. How much would it cost R&D to update the Mac Pro? Teenagers can do it for peanuts, I'm sure the largest company in the freaking world could manage. If they were truly sorry or marginally “cared”, that's what they would have done years ago.
I'm fine with them playing the “let's reinvent the Pro computer” game as a side project, they have this massive amount of money burning a whole in their pockets after all, but some of us need to work.