Where and how are you getting the ~1000 news articles you feed to GPT4? I think it would go a long way for transparency to list that somewhere on the website. Also, are you using international news agencies? Quite a lot of them publish an English feed too.
I would also love to see the difference it would make given a different geographical prompt ("in the context of China/India/Asia/Europe... How would you are this article") and political ideology prompt ("how would you rate this article for a Republican/Democrat/Libertarian/Socialist...")