Should we do more to discourage custom prefs and nonstandard addons?
We make some effort to discourage users from setting nonstandard prefs in Tor Browser, or installing 3rd-party extensions/plugins. But maybe we can do more? For example, should we pop up a warning about deanonymization when users first attempt to modify a pref or install an addon? And if users click past that warning, should be periodically pop up warnings in the future to let users know they have nonstandard prefs or a nonstandard addon installed?