Modules|Themes can be tagged by the owner of the module. And will improve search results: http://en.wikipedia.org/wiki/Tag_cloud Example: Module "Views" Tags:(Display, Content, version Dev, Beta, etc...) and filtered by it's version v6, v7 etc. Theme: Tags(Colors, Columns, Dev, Beta, HTML5 etc...) http://drupal-association itself is using this feature but it is not found on drupal.org. Tags are also used on blogger.com ...more »
Section : http://drupal.org/project/themes
Add/Update fields (essential) :
1. Demo (link or screenshots)*
2. Tags (for filter or search)*
+ Display section, more like a gallery.
I'm sure, this will attract new users to have a try on drupal CMS. And of course will also appeal to designers to contribute more themes to the community.