I would love to see it happen, but an internal service vs something exposed to the internet can be challenging.

I think services like Cloudflare could play a role if they were able to provide some kind of forward auth and preferential treatment of core users during overload. My self hosted systems would have to be the source of truth and Cloudflare would have to be replaceable for me to consider using it.

Think along the lines of automated pre-auth that coordinates with the origin based on some standard.