I bet software developers and podcast producers would jump on a Mac mini Pro with those innards though as a 27" 5k panel may not be top of their list of needs.
Speaking anecdotally, the "Apple certified" 5K panel is one of the reasons they went with the iMac Pro because they do not like the LG Ultrafine 5K. So unless Apple starts making their own 5K displays again...
If there's a redesign on the cards, I wonder if it might become even more popular with an upscale pro audience if Apple actually got rid of the microphone array and webcam on a refreshed iMac Pro and instead allowed people to purchase their own better specified external equipment if they needed such facilities. It might allow for reduced bezels at the top of the display.
The podcasters all use external microphones, anyway, and the real issue holding back the webcam appears to be the thinness of the upper bezel, not its width. So I would hope Apple thickens the edges a bit so they can put in the iPhone 11/12 front-facing 1080p webcam and FaceID module.
It may also point to redesigns making future fan replacement and RAM replacement easier. Certainly in a 'pro' model.
With the Space Black coloring I am not sure how visible a RAM door would be anyway, so hopefully now that Ive is gone the new team will accept a small RAM door above the ports to allow RAM to be replaced. I also would not mind an adjustable stand, while we're at it, though it does not need to be as nice (much less as expensive) as the Pro Display XDR's.
In fact wouldn't the Apple assumption that the 32" 6k HDR assumes professionals will be utilising VESA mounts (yes, instead of the $1000 stand) point to a situation where those professionals/prosumers with less deep pockets could be instead pointed towards a Mac mini pro plus 4k 24"-25" HDR display option which equally doesn't have webcam and microphones?
I guess it depends on the end-user. The Apple tech podcast crowd I listen to all want an Apple-branded and designed 4K/5K displays as they have used the non-Apple 4K/5K displays and not liked them. The software developers at my work all use 2018 Mac minis and 15" MacBook Pros with Dell 24" QHD and 32" 4K displays and they note they are okay for code, but they would prefer a Retina option.
Look at the development in monitors with built in USB-C docks
as launched by HP recently.
Apple would never release a monitor with that bulge on top and let us be honest, if they did, the Internet would savage the s**t out of them for doing so considering all the flack they took for the "notch" on the iPhone.
And yes, I know the Pro Display XDR has that Logitech web cam module that sticks on top, but that is a third-party add-on so it is there if you need it and you can remove it when not in use.
This would release the traditional 27" and 21.5" iMacs to be a bit less 'pro' and go even slimmer/lighter or perhaps even be merged into a single 24" 4k model which is effectively a MacBook Pro 16" driving a 4k panel and only offering SSD storage.
The Mac mini then gets a 'pro' make-over which can include GPU options in a nice Cube style case designed to live with 'Pro mode' in as much silence as possible but with design cues from the main 'Pro'.
I believe Apple haven't put iMac-class CPUs and GPUs into it not because internal marketing analysis shows it would cannibalize sales from iMacs, but because it shows people wouldn't buy it and instead continue to get an iMac because it comes with a top-quality monitor already. AIO is a popular form factor as a desktop for macOS users - the model sells roughly 8 to 1 compared to the Mac mini if not higher. People appear to like the design and having a high-quality large display and the iMac line offers a wide swath of price and power. Reducing those options is just going to reduce sales.
The Mac mini is designed to fill the niches and "edge cases" where people want to use macOS but are constrained on a cost or space issue. It took Apple a long time to come to that realization, but they finally did and upgraded the machine in 2018 to better address those niches.
Yes, I am sure there are markets for such a machine - photography connected to calibrated display comes to mind. However, a significant part of those markets is using MacBook Pros because they're more easily portable. You use the MBP in the field with the built-in display to take the pictures and then bring it back to the office and plug it into the larger calibrated display to do the editing.