Here's my wishlist:
ability to change category on a story
ability to add tags to a story (change/delete too, for an admin)
Multiple levels of categories (sub categories)
I wrote an RSS injector for one of my sites (
http://www.networkstrike.com) and I'm not quite at the level to be able to determine the category or tags at the time of injection, so it would be nice to be able to add them later.