[alcimedes]

The entire aftermarket of parts is essentially missing from the Apple world now.

What does a modular Mac even get you unless Apple makes a boat load of potential parts (totally against everything they've ever done.)

You can pick your own display, but you could just get a 2nd monitor for your iMac pro, which is uber quality and use that when needed, the iMac Pro screen will likely be a pretty high end one as well.

Or somehow we hope 3rd party support materializes?

I'm still missing what the selling point of this modular mac would be, other than "pick your own display" but no one waits three years for that, and it doesn't bring anyone back into the fold.

There must be more, or in my mind the iMac Pro becomes the defacto Pro desktop of Apple's future. (guess even if they make a modular Mac Pro, I don't see any significant potential selling points over this offering. The iMac Pro is going to be good enough for the vast majority of people looking for a high end machine.)