Currently when users register at sites like Commons or Meta there is no way of knowing for them that aside from the different versions/translations of pages that there is also an option in the preferences to change the language which affects the user interface and templates like LangSwitch.
Perhaps this should become an option during registration.
There currently already is a set of uselang-links on the login and sign up page that will show that page in a different language, this new dropdown menu on the registration page would assume the value of the current uselang so that people going to http://commons.wikimedia.org/w/index.php?title=Special:UserLogin&uselang=de&type=signup or http://commons.wikimedia.org/wiki/Special:UserLogin/signup?uselang=de don't have to change the dropdown menu (asuming they want it to be German)
Krinkle
Version: unspecified
Severity: enhancement