I don't work at Facebook, so I'm not gonna spend my time doing their work for them or you.
But off the top of my head, classifying the data into various categories and mentions of Facebook/Meta could allow them to derive sentiment about the company based on geographical location, and know where to invest more in changing the sentiment.
> What data would be useful to capture?
Pipe the prompts straight to Meta and I'm sure they'll be able to extract a ton of useful data.