I was just checking for the latest version of foo_ui_columns and foo_playback plug-ins and couldn't find them there. This prompted me to ask this question.
Could it be that it's not being used, so is it that the new plug-in authors don't know of it?
I personally think that it's a great idea to have the plug-ins accessible from a single location instead of having to search for the latest thread. It also allows someone to take a quick look at the Known problematic components thread to verify current functionality.
Also, would it be easier to have two other categories for UI and Networking plug-ins? (In addition to the Input, Output, etc.)