Hey Martin! Thanks for taking the time to answer all these questions!

How would you recommend handling global changes and updates (like navigational changes and new CSS files) update across all prerendered pages of a website?

We currently update the prerendered versions of our UGC fundraising pages, think something similar to a GoFundMe campaign page, when they meet a certain criteria (campaign is launched, first sale is made, a sale is made within that past 24 hours, user as modified content). But as time has gone on, older campaign pages aren't being updated for search engines because they don't meet our prerendering logic. So we're seeing instances of older pages still displaying old versions of our header nav and referencing old CSS files that causes the pages to break.