Issue:
It seems that currently the Diff tool just links people to the diff page, and many users may not know anything about diffs.
Proposed solution:
Use feedback tool add the diff to page
Alternative:
Use Help:Structured Discussions/Preloading .
A Feedback form with placeholder fields or simply text (e.g. "Problem: , Where: Using what feature", would also be a good idea. The current one is just adds a link, and is probably the source of a lot of empty feedback for people who just experiment with clicking buttons.