Not sure if this is the right place, I'm probably early to request this anyway.

If I understand correctly, this needs:

• an extra TLS extension
• the webserver should understand 2 or more 'SNI names' for the same name, the plain text name plus a number of encrypted names.
• generate a new key regularly
• needs a way to tell DNS about what key clients can use

https://tools.ietf.org/html/draft-rescorla-tls-esni-00

Sounds to me like if there are multiple web servers, you'd might want to have a centralized program pushing updates to the servers and DNS.