After so many years of wanting this, it's actually happening! I've used so many poor-man attempts at this that try to emulate vim like keys in the browser or shuffle data off to an external editor window. This is different! This is a full blown real instance of Neovim being run with my usual init.rc configuration and all my plugins ... overlayed on text areas.

Yes it has some rough edges (don't hit CTRL-W in an editor!) and not all sites work seamlessly yet, but this is clearly a step beyond all previous attempts at something like this.