Would be cool if they repurposed the old 'trashcan' Mac Pro design to offer a non AIO Mac desktop with dedicated graphics as an option. Like you say, don't think it's happening in the current mini design. Having said this if Intel are successful in upping their game on integrated graphics (or Apple switch to AMD or eventually ARM) it might not be necessary for most use cases.
Ok yeah that would be interesting. I’ve always like the trash can design, I know I go against the grain in that ha but it would be cool to see what they could do with it to make it sort of a mini+ computer