Flag changed purchases, compare promotion pay. Every one is ready to run, and you can adjust it in plain language.
Carry prior fix requests into each revised proof handoff.
Your reviewer can find the new proof beside the earlier version and the fixes still open, right on the task.
Track which requested proof edits remain open after each revision.
See which requested edits made it into a revised proof and which still need work, right beside the files on your review item.
Flag proof revisions that differ from review titles for coordinators.
Keep proof reviews clear: your coordinator sees conflicting revisions on the issue and can choose which one belongs in review.