Data falsification through randomization should be added to Firefox built-in fingerprint protection. It would be nice if there were the possibility to spoof some data sent back to websites.
A randomized fingerprint would be a nice new feature for the browser.
At the moment there are only some add-ons, like Chameleon, which provide user agent randomization and some kind of spoofing like, font fingerprint or screen size spoof. The functionality should be a Firefox built-in.