Sounds really great and certainly very needed as we've been wanting and needing a place to serve as a repository for 3rd Party Plug-ins.
A few thoughts that would even make the idea better would be the separation of a 'dated' / outdated / no longer useful, Plug-in under Hal 6.X.
There's really no use to save or archive Plug-ins that were written for Hal prior to version 6.X as no one uses those versions, .brn / brain files, Plug-ins any longer. (to my knowledge).
There could even be repositories that still worked or were applicable like .hap, .htr, .haptar, .jpg (with character faces or backgrounds), various GUI / skin files, and of course those .uhp Plug-in files, some of which seem to be missing in action.
Everyone needs to dig through their personal archives, drives, flash drives or where ever one might have some Plug-in related files stashed!
Good thinking Cyberjedi!
Let us know if or when you get everything (drive, space, URL, etc.) set up and we'll send to the provided Folders / Directories.