It would be useful to list IP ranges that the scans come from -- a lot of my web stuff has "hosting providers" firewall dropped because so much malicious traffic emanates from the hosting providers (Do you hear me, Digital Ocean and AWS?)
Good idea. For now, I advertise as "User-agent: bernard/1.0", but I might create a .well-known URL listing all the IPs we scan from. I already need to do that for Cloudflare.