It would be cool to support something like:

   import mystyles from "foo.css";

...which would result in a <link> being added to the Document (if one isn't there already) pointing to foo.css. "mystyles" would expose that to the script somehow.

Obviously normally this would be just getting a reference to an already-downloaded style sheet, since we don't want to be doing these late-bound (same with how we're probably going to want to predeclare the modules that are imported, so that they're not fetched late-bound either, in pre-HTTP2 environments).