We are trying to get user adoption on Proof, after a few months of using Document Approvals. (We suggested Proof last summer, but it was rejected.)
This question has come up now that Proof is potentially back in the mix: at one point does one start using Proof as a tool for collaboration/feedback? My INSTINCT is that it's when the document is at least mostly ready for primetime, in some layout that could be presented to the intended audience. It does NOT seem ideal for non-PPT Microsoft tools, where Teams or Track Changes would be more appropriate for back and forths.
Any insight to support this suspicion based on your own use would be helpful, thanks!