At the same time, that existing base of legacy IRC clients and servers is the only reason it could be worth hanging on to the old protocol. If we're going to break backward compatibility, we might as well take the opportunity to fix all of the other long-standing issues with the protocol.
I still have hope for the IRCv3 project, it appears to be fixing a lot of the issues mentioned. I'm on Matrix, but until #debian moves, I'll be found on Freenode and OFTC.