Sounds like a good idea, I also did not really like that part, especially since I have many refs (auto-included via the snippets), but don't really remember how they are called and this autocompletion isn't that helpful.
This idea as well as its implementation as a html-list sounds great; just make sure it also works with larger documents and split latex projects that depend on one master file and many included or input files…
just my 2c,
Dan