We've developed a thematic skin for our (commercial) site, and would like to make it *the* skin, i.e. there will be no other choices, and even current users with a different skin will find themselves using the new skin the next time they log in. What is the best way to do this? I've set the 'wgDefaultSkin' variable, but it won't affect current users (I imagine), and in any case it doesn't force a single skin.
Thanks, Ken