Nice, what is missing is a way to have vim (or a decent approximation) in every text area, embedded. There are different solutions and extensions but nothing comparable to vim running in the text area box.
While I'm at it, another thing I miss so much is the ability to tell Firefox (or other browsers) that I write in two languages (Italian and English) so it could automagically switch spell correction dictionary auto sensing the language. This problem is common to at least half the people living in Europe.