Catalogue Editor: Favorites Box
This one is out there... Add a check box to every entry "favorite". If you mark an entry as a favorite then when you right click elsewhere there would by Cut Copy Past and "favorite" a folder with a list of all of your favorites. Select one and a link appears to that favorite. A favorites side bar would also be cool. Maybe the side bar lets you right click on the favorite and choose to either add a link or copy the whole entry. Would make creating catalogues from scratch easier.
I like this! A few things need doing first, but I’ll do this when I get a chance.