Comment 10 for bug 338002

One thing I like about the MOTU REVU system (http://revu.ubuntuwire.com/) is that the submitter can make changes, and you can see and comment on any of the full record of submissions. There are easy links to diff between them. That's sort of what I'd like to see in Launchpad merge proposals - at the moment it's unclear exactly which revision a comment is about, and what changes might have been made since.