Same question I've been asking all along. Why did Mozilla choose to spotlight these specific features? I assume there is a strategic answer, but I don't know what it is.

In that case, you're better off either talking to people who work there, or filtering through their meeting notes. Mozilla is a very open company, so you shouldn't encounter too much resistance. Although in all honesty, it was probably just a marketing person who chose what to highlight. Good luck with your endeavors!