I went ahead and made some new wireframes:
http://easywebdesigntutorials.com/the-new-wordpress-org-plugin-repository/

They include search, view options for viewing active installs, author, latest update, compatible up to version etc.

I brought tabs back into the single plugin page.

Other thoughts are..
- Responsive design. Got a huge monitor then see 4-5-6 columns of plugins. Got a small screen see 1-2 columns.
- Infinite scroll. Scroll your way down the page looking at plugins.