Do you know what was edited by the moderators?
Whenever I get a notification that my sub was edited by a moderator (modtr), I usually check it to see what was changed. However, it's quite difficult, unless the modtr left a message.
My idea is, at the acknowledgement section (in the sub), add a subtle description of which section of the sub was edited. This is all done automatically, it doesn't require the modtr to type in.