Or don't waste your time, given Mozilla management does whatever it or Google wants? Just like with Google, nobody works on anything that won't help get them promoted?
There are decade-old "everyone agrees this sucks, please fix it" bugs in bugzilla that are ignored because nobody in management or development cares. It's not sexy, can't go on their resume, it won't let them give presentations at conferences, or get them on people's podcasts, or tweeted about...