[albuic]

I have always thought that we need a way to add firewall rules on ISP side so that we can block abuse at the origin without impacting the last device.

[mulmen]

No thanks. ISPs have proven to not be trustworthy. What you are describing is a proxy like Cloudflare who you pay specifically to prevent abuse through your domain.

I want a firewall from my ISP about as much as I want a carwash from my public utilities.