I find all the top-level clutter irritating, like billboards on the roadside. I would prefer that plugins put themselves into the approprate submenu. Galleries, lightboxes minimizers etc should be available under "Media." Security, SEO, coming soon, would be easy to find in the "tools" submenu. Membership management and other user-oriented items belong under "users." A lot of plugins only need to be configured once, which would be very easy to link to from the plugins page itself.