Sometimes I get an edit that greatly improves a question or answer I have submitted. I'd like to acknowledge an edit like this, so that readers can know that the revision was approved of by the OP (me!).
I was thinking of comments on edit, or a checkbox noting that OP vouches for the edit. Sometimes I would like to add a comment to the question or answer, but those don't make a lot of sense in that context.
Any suggestions about the best way to do this? Consider this a feature request, as it seems useful to know that a particular edit was endorsed/vetted by the OP.