Support for external links in search & graph view

I tend to link out to a bunch of external links (other docs, articles etc) and it would be great to reveal these elsewhere in my graph.

(1) Perhaps a way for these to be included in a typeahead search when adding a [link] so that I can easily add that link elsewhere without having to grab the URL again

(2) Is there a query to grab external URLs and list them at the bottom of a page, similar to Linked/Unlinked References?

(3) Reveal URLs in the Graph View so you can visualise how posts/sites etc are linked across the graph