That's a great idea and it's something users have been asking for for years.
I like your twist of letting users dictate which Plug-ins load!
I would like to be able to arrange them in the directory or even create new directories.
Hopefully it's something we'll see in 7.4.1 or 7.5.
In the meantime, here's the feature request page:
http://archive.digidesign.com/support/forms/feature/