Right now, all timestamps on Flow posts link to the topic history. When you click on a timestamp for a post that's been edited, it would be more helpful to link to the most recent diff. Then you could see what's changed right away, and if there are more than two versions, you could browse back through the previous revisions.
Customize query in gerrit
|mediawiki/extensions/Flow||master||+4 -4||"Edited by username" timeago should link to the most recent diff of that post|