WP3.5 multisite network "mu-plugin" to toggle administration meta boxes for the entire network of sites.
WP3.5 multisite network mu-plugin. Go to Network-->Settings to "Enable Administration Meta Boxes". Meta boxes (post, page, and link edit forms, and dashboard) are unchecked and disabled by default.
Extra options to toggle the Quick Edit buttons, Media buttons, Screen Options and Help links.
I use the plugin to simplify the various edit forms available to the entire network of sites.