Wow, a lot of views, but only one comment...
I think the i7-8809G could be the top end Mac Mini that focuses on Pro use...
This would slot it below the iMac Pro, which has the Vega 56 (w/8GB HBM2) as the baseline...
The forthcoming Modular Mac Pro will probably offer dual WX9100s (is this the Vega 64 w/16GB HBM2 we see in the top-end iMac Pro...?) at the top end...
But a decent modern medium power multi-core/multi-threaded CPU (8th gen i5s & i7s) & the ability to have an eGPU (hello, Vega 56 Nano) would be a good route to go as well...
Whatever Apple brings us for the Mac Mini, I hope it comes in Space Grey, and I hope Apple rolls out a new line of displays (that are also in Space Grey)...!
I know I could build a Hackintosh that has better components for the same that a Mac Mini Pro might cost, but with the HackPro comes the hassle of getting everything to work & the dread of a minor update shutting your system down...