Carry the notes on a rejected file into the related revision work.
Your creator gets the reviewer's requested changes and current draft together, so they can start the next revision without chasing files.
Your maker gets the fixes in the review task, tied to the PDF version your reviewer marked up.
Your campaign team can see requested edits beside the asset, without hunting through reviewer emails or copying feedback by hand.
Your maker sees the reviewed image or PDF and requested fixes on the linked assignment, with the right proof version in view.