A great use case for llms. I'm not expecting you to do this, but I would love to choose my own news sites. I'm a Brit living in Czech Republic. So I'd maybe have the guardian, BBC, and some Czech sources in there. Not so interested in American news, any American news that affects me will reach my local sources. But great work!
A prompt, or more like a list of them seems the most interesting customization. For example: "no crypto currency", "nothing from Keith Rupert Murdoch", "chinese realestate", "ukraine war", "forex" etc
Now that would be worth something...
Say, you want more than 6 filters they costs 50 cents/filter/month with a minimum of 5.
I think one would gradually make more and more of them?