If I'm being honest with myself I do steer towards and away from certain news outlets based on my perception of their overall trustworthiness. In my ideal world I'd judge articles on their individual merits.
For example. When I was a kid, the Wall Street Journal was top tier in reliability. Nothing changed immediately after Rupert Murdoch bought them but over time I noticed some changes. In particular I started seeing editorials less clearly marked as such and mixed in with regular articles. That struck me as shady editorial decisions. I've read enough shoddy WSJ articles since then that I don't really trust them anymore. That said, they still put out individual articles that are accurate and well sourced.
For practical administration reasons I suspect you'll have to take the broad approach of just banning some sources that are egregious repeat offenders. Ideally I'd like to see a set of criteria that define what gets sources on that ban list and what can get them removed. If we can identify reliable fact checking organizations perhaps we could use them as a metric (ie any publication that has more than X fact corrections in an N month period is auto-banned).
I hate clickbait but I don't know how to define it. How do we differentiate them from well written, attention grabbing headlines?
I'd love to see more attention paid to self policing. Eg Ira Glass did the most epic retraction I've ever seen. https://www.thisamericanlife.org/460/retraction When they figured out that their story was wrong they didn't just say, "Oops sorry." They invited the source back on, and spent a whole hour analyzing where they went wrong. My respect for NPR shot way up that day. It would be great to see a score of how good media outlets are at admitting their mistakes. That would greatly increase my trust in them.
edit: typo
There’s significant investment in green alternatives. Particularly in China, but in many other places as well.