Just a warning; Special:Preferences in cvs head is currently a bit messy. I'm partway through reorganizing it into more sensible groupings of options, but this ain't totally done yet.

It may also be worth dumping a few of the toggles that do useless or undesireable things.

I'll also mention before I forget it again that the sidebar position option doesn't work on MonoBook. In addition to the prominent user preference for it, right-to-left languages (Arabic, Hebrew, Farsi, Urdu, etc) use a right-hand sidebar by default, so we need to at least have that ability to maintain user interface handedness.

-- brion vibber (brion @ pobox.com)