This is really interesting. When I work on Wordpress stuff I switch from emacs to PhpStorm because I like the autocomplete, features, auto formatting etc. This would be a really nice replacement for that.
However the Wordpress project I work on has to have access to node to run gulp to compile coffeescript and sass. How would that work in this scenario? I also keep the dev/staging sites in sync with production using wp-cli import/export -- could I run commands remotely? I suspect not, but am curious.