It will certainly be an unpopular thing to say but I will say it: Protocols wear out over time.
In principle I wouldn't disagree, but in practice I don't see how we migrate from SMTP to SMTP++ or whatever.
You know as well as anyone that for decades people have been saying e-mail is dead, everyone uses X instead, but the X keeps changing and e-mail is still around.
R's, John PS:
For mailing list delivery, just switch to NNTP, someone has a gateway.
I've been gatewaying IETF lists to my local NNTP server for years. Works great.
