The biggest thing that I can see that needs to be done would be shutting down “news” organizations like FOX News, OAN, and Newsmax. Also, breaking up online movements like Q where blatant misinformation is spread as if it’s proven truth.
Now, HOW you do that without massive first amendment violations, I don’t know. You would also need to be careful how it’s structured because that could easily be used to shut down anyone left of center should a Republicans take the presidency/control Congress.
The problem, even if we reinstated this, is that this applied to broadcast only. This wouldn’t apply to cable channels. Neither would it apply to Internet groups. Both of those would still be free to spout full blown lies and conspiracy theories dressed up as “news.”