Following/Subscribing to user
The ability to follow users to get notified when they upload new assets (Obviously the users should also have option to not notify others when they upload for example when updating something or just typo fixes etc)
It would also be to have separate list for these users. (So next time I want to find something I know is uploaded by Wes it'd be easier to get to his page)
Getting notified when anything is updated at all would be nice. And a button that would automatically update the items in question would be nice, too. It is annoying trying to figure out if you have the latest version of something.