Most mainstream pess is propaganda in the USA. You cannot have free press when the majority of media is for-profit and colsolidated into the hands of fewer companies than ever. The filters keep the truth from being told and you don't even need a conspiracy for it, it's just the outcome of capital control.
Transition media conglomerates over a certain size/revenue to run as some new category of non-profit (imo 503 doesn't have enough categories)
Limit the number of boards any one person is allowed to sit on. Those five media conglomerates that control the US media aren't even really all that distinct.
Hell, break up the media conglomerates. Update the sherman anti-trust in order to do so.
Give the FCC more power. The lack of power is partially to blame for our sad state of affairs. Fewer regulations haven't resulted in a good system, and I'll be bold - I think more regulations will.
I'm with you that state censorship of political views is right out, but there are some standards of decency that I do think we should keep such as gore, and hardcore pornography on TV even on cable. Especially right after school.
Fund the hell out of PBS.
More Mister Rogers, fewer 20-minute toy commercials.
https://en.m.wikipedia.org/wiki/Manufacturing_Consent