> Why not create a different protocol then if they're not yet compatible?

I want existing bittorrent clients to add WebRTC support. The task of convincing the existing clients to do this will be a lot easier if the protocol is unchanged except where absolutely necessary to accommodate the WebRTC signaling (peer introduction) process.

I don't want to get distracted by trying to improve the BitTorrent protocol itself. It works quite well, despite not being the most elegant for implementors.