I dont want to quibble and dont want to underestimate the work the guys at http://wp-plugins.net/ put into the database and page, but searching a plugin is a real pain in the ass.
What I'd like to see is a fully searchable, categorizable, up-to-date database of plugins integrated into http://www.wordpress.org
Things I could imagine:
- Integrated with WordPress.org useraccounts
- Add plugins anonymously, show them on page after validation by 1/2/x common users (to prevent spam)
(could feature a "pending additions" view for logged-in wordpress.org users) - Support for tags
- Fields for Author, website, Plugin Name, Description, installatation and usage of the plugin
(ever found a link to a plugin that's dead? :( ) - Option to upload 1-2 images for screenshots
- upload zipfile with plugin