add submenu items to "my sites" menu

The “My Sites” menu could be so much more… I’d like the submenu of each site to be a mini dashboard menu! I want to put pages, posts, appearance, plugins, etc in each of those submenus. You know when you’re tweaking things in network admin, and you want to quickly configure something in a site, and you haven’t yet opened another tab for the site, and it would just be SO HANDY to be able to go right to the plugins page of the right site in one click…

Anyone done that already, before I crack open the codex?