Just wondering, with having JJ2+ clients and servers couldn't the netcode be changed to remove the port bug all together? Theres no reason in any game for the client to have to open ports to join games?

Don't know if Ill be any use for your current project, I dont get access to forward ports at University Halls, the only way to open a port is to flood it with outgoing traffic in an attempt to make it think inbound traffic should come back to my PC and not get stopped at the gateway