Nobody will update their machines that haven't been updated since the 90s because your protocol needs a new port to be freely accessible. Nobody will thusly adopt it and in turns nobody will update their machines.
The TCP/UDP/ICMP trio has been ossified as the ground protocols of the internet, ports 53/80/443 for traffic and TLSv1.2 for SSL traffic. Almost everything outside these parameters breaks in a variety of networks from "bad performance" to "simply doesn't work", depending on whether you sit on a VPS or a normal landline like business or consumer DSL.
We have to deal with that if we want updated protocols to even remotely have a chance of adoption. As I have repeatedly said, this is the reality of the modern internet, face it or have you protocol forgotten and unused.
