Third redesign in a row with no updates in between? Great job, Apple.
Hmm.... Not sure I saw the release of this new rumored product. When did it happen?
However, I did see a few updates so far in the graphics cards and other components. Given the transition to Apple Silicon, I am not sure what you are seeking. Are you saying that you want them to stick with this case design even if the new thermal profile of the Apple Silicon system does not need most of that size? Are you arguing that they should neglect the Pro market and not release an Apple Silicon Mac Pro? That machine is the last of its line, so other than a possible CPU upgrade and another new GPU or two, I have no idea what one would expect.
I really don't know where their heads are at with the Macs these days. Why can't they make a modular desktop with internal expansion capabilities (drive bays, PCI slots, and memory) and a CHOICE OF GRAPHICS CARD VENDOR that doesn't cost an arm and a leg? Seriously, $6k for a nearly empty chassis??
As has been mentioned before, Apple, as it always has, builds a limited set of machines. That means that if they build an expandable machine it needs to serve the whole range. That means that the entry machines and the highest end are rarely the sweet spot. I expect that you will get a choice of graphics card vendors for the next system:
Apple and AMD.
If you mean nVidia, I would be surprised to see that until they change a number of their policies (including supporting Metal and providing source to their drivers) which is not very likely.
The Mac Pro used to be a be-all-do-all machine. An enthusiast could get one for an attainable amount ($2500 to $3k for a mid-range, anyone?)
The entry price for both of the previous two machine was $2,500 and $3,000, so I am not sure how far back you are going to have a mid-range machine at $3,000.
and know they could upgrade a component in a couple years to keep it relevant, while a pro (or a rich person) could configure one out the wazoo and have the fastest computer in their county for the next six months. Further, they could be configured for any use case -- gaming, music production, video production, 3D rendering, high performance CPU, or any combo of those.
Macs have not been relevant for gaming for quite some time. If Apple Silicon performs as well as it might, and Apple can produce competitive GPUs that they can sell for competitive prices, that might change. The current machine is great for music and video production and many machine learning applications, it is just not the right machine for hobbyists and those who want to tinker with their machine.
So frustrating. This is why I haven't updated since my cMP 4,1 (flashed and CPU upgraded).
It does not sound like Apple makes machines that are right for you nor is it likely they will anytime soon. Unless the game industry decides to actually support the Mac or, at a minimum, port to Windows on ARM that might run on ASi Macs, these will not be gaming machines. These machines will not run AMD64 versions of Windows, so they will not make sense for any high performance Windows based software (like 3D Studio Max), meaning that they will only be interesting for people if Apple is able to build systems that are compelling enough to get some of those vendors to port to macOS.
If they are compelling and priced competitively, they have a real chance. In a world where they a stuck with the same CPUs and GPUs that everyone else has, they would never be competitive for (as you said) more than a few months. In the Apple Silicon world, they may be able to remain comfortably ahead for much longer (witness how well one and two year old iPhones stack up against current flagships Android devices).