Just been testing the new Replay video commenting/review portal. Really great stuff.
I guess many people who work as video editors have been waiting for this type of service to be tied into Dropbox.
My idea would be to add a export the comments as an .XML file feature which will pull the timestamps and comments. This way you can easily implement the changes by having the notes sync directly to your editing package's timeline.
Looking to import them into final cut Pro X.