IMO what made the 27" 5K iMac great was the base model. Anything other than that wasn't near as good as value and while it looked nice the options we have now are a much better value than the higher iMacs/iMac Pro (which I actually had).
I'd kinda like to see Apple go a different direction. Release a new line of displays (say 24/27/32) that can function as normal displays but also have a new type of connector to it for a new type of modular Mac. Something like a Mac Nano. Even smaller than the mini but it would seamlessly connect to the displays (if wanted) and get its power/video directly from the Display. No extra power or display cables (again if wanted). That way you could have a the benefits of the aesthetics of the All-In-One but more upgradability later. They could even bundle the Nano (or the displays) with keyboard/mouse/trackpad etc or even sell it as a complete set. Anyway, that is my thought.
I'd kinda like to see Apple go a different direction. Release a new line of displays (say 24/27/32) that can function as normal displays but also have a new type of connector to it for a new type of modular Mac. Something like a Mac Nano. Even smaller than the mini but it would seamlessly connect to the displays (if wanted) and get its power/video directly from the Display. No extra power or display cables (again if wanted). That way you could have a the benefits of the aesthetics of the All-In-One but more upgradability later. They could even bundle the Nano (or the displays) with keyboard/mouse/trackpad etc or even sell it as a complete set. Anyway, that is my thought.