One thing I'd really like to see is the ability for Sublime to automatically detect formats and apply syntax highlighting for files that it doesn't recognize.
Ok, this may get a bit annoying if it constantly does it wrong, so, maybe you can have a menu option: View->Apply Syntax Highlighting->Guess. It could take an educated guess, and apply it. That way, we can bind it to a key, try it, and if it's guessed wrong, then we can manually tell it what to use.
That'd be my personal fav for the week