Oh wow, this will make self-hosting so much easier! I have so far issued probably about 30 different API keys for my subdomain zones for services I host, which

Oh wow, this will make self-hosting so much easier! I have so far issued probably about 30 different API keys for my subdomain zones for services I host, which you then have to configure with ACME/Certbot. This reduces it to a simple DNS record change!