I vote for this.

Websockets have been around for years, and are becoming normal in day to day internet. Mozilla was one of the biggest promotors. I'm using them more and more.

It just doesn't make sense that I can not debug websockets in Firefox.

I end up doing much of my WebSocket app development in Chrome for this reason alone. I'd love to see WebSocket message inspection in the FF dev tools.

I'd also like to see the tools go farther with minimal formatters for messages, particularly messages in JSON format.