Honestly, I hope that Facebook becomes more restrictive and more censorship-oriented. That would make alternative platforms more viable and increase diversity in online media. I'm also 100% opposed to the idea that private companies should be permitted to or expected to function as the town square. That, more than censorship, is the real threat to freedom of speech and freedom of thought. Facebook, twitter, and youtube, by the nature of their ranking algorithms and the structure of the service, have a huge influence on what and how ideas spread without explicitly pushing or censoring content.