> Whenever a page doesn’t render well (can you say JavaScript)

I mean, yeah, emacs doesn't have a modern browser engine in it. I wouldn't recommend it for that use case and of course you'll have to "shell out" to a modern browser engine to handle that. Now, if emacs could somehow provide an X render target and let the browser process bind to it as the window, that would be kind of awesome and I could totally see kicking my window manager overboard and just switching to emacs. But the web just "looks wrong" text-only these days.

Apart from that, great experiment and fun idea.