I know you hear a lot from me whining about something or another (danpost) ;) but I have one tiny suggestion for the next release of Greenfoot
A lot of my scenario updates contain only bugfixes or are just alpha versions for testing on the Gallery. Needless to say, the public doesn't really need to know about these uploads and it clutters my comment section (See here)
Maybe, you guys could add an option to the Export to Gallery UI for a silent update that updates the scenario, but doesn't automatically add the Update Notice.