I think that libel laws could be eased just a bit. As it stands, to sue a newspaper for libel you need to prove that they knew what they were reporting was false, or that they showed a "reckless disregard" for the truth. It's a very high standard, but occasionally you will see cases settle (e.g. Covington High student).
I do not think the government should be intervening on content decisions. I think;
(1) publishers & platforms should be legally responsible for content they host if they are going to editorialize on it
(2) from a 'net neutrality' standpoint, that utilities and platforms should be mostly blind and entirely blameless for the packets they carry, and
(3) we should allow some level of packet and/or content classification in the middle of #1 and #2 without making the utility/platform fully liable for the packets/content they are carrying, if that classification is based on fairly protecting the network/platform from "attack".
The only reason I can see for a fairness doctrine would be based on a theory of anti-trust. To the extent that Twitter, Facebook, Apple, Google, etc. are monopolies, their ability to censor non-obscene viewpoints on their platforms should be limited... and that's a spectrum not a binary switch.