UpdateSet is a very lightweight addon (less than one page of code) that adds support for a single slash command '/updateset'. It works with the builtin equipment manager.
The slash command takes one parameter, which should be a gearset that already exists, and will save over that gearset with the currently equipped gear. Useful for when you get one or two new pieces of gear and want to save the set without using the annoying builtin UI.
Example:
/updateset dps /updateset tankgear

