I have an idea for a shortcut for interlinks -- could an interlink with no article name be taken to mean "the same title as this page"?
eg: On the french page "Milan Kundera", a link that's just "[[en:]] would mean "the equivalent english language page has the same name, ie it is [[en:Milan Kundera]].
(... or is this one of those cool things the dev team have already thought of but not told us mortals? ;-)