@Scott I agree with the secondary repository that would have enhanced features like searching on additional fields like version, author, update date range, screenshots available and better categorization than the current tags. Wordpress.org could link to this additional site with enhanced features/security/testing which would encourage developers to submit their plugins (for more targeted exposure). They might even have a section for non-GPL and search on that field as well.

@trent I thought of creating a page on my site just with Google custom searches for the repository because I've had to build these searches to ensure I was getting the best plugin for the task. I saw one site that had done this with their own collection of plugins, but not linked to the repository (so the data was old). This seems like a simple interim fix that I'll get around to at some point. I'm just getting started. Maybe Jeff wants to do it.