Ya. I had an iMac Pro I dumped when Mac Pro was finally released. I didn't dislike it, it's like a high-end iMac where the cooling works correctly. I mean, that's it basically... iMac Pro is just an iMac that actually works and can sustain promoted specs -- as opposed to hit them with fans going at warp speed and then throttle downwards shortly thereafter.
The most urgent change iMac requires is slapping a T2 chip in there, to help enable Apple's artificial cut-off for no longer supported systems. No T2? buh-bye a few OS revisions sooner. I strongly suspect this should've been released sooner, but got delayed due to world falling apart and civilization being semi-cancelled for intermittent periods of time.
Just a quick side question. How does the base Mac Pro processor match up with the i9 in the iMac? I am tired of this iMac and looking to replace it with a system that actually has good cooling. Doesn't the Xeon lack QuickSync while the i9 has it? For video editing, that might cause some issues. Unless the T2 also does h.264.