Thanks, really appreciate you giving it consideration would be awesome. Cheers. Also, couldn't it just be as simple as adding a "tag as paywalled" button next to the flag option. Then, if 3 people, (or a reputation heuristic meets a threshold) a small wall icon appears after the article. It doesn't have to crank up gravity or affect the post.
I've got a specific use case that's not applicable to most HN readers - here in .au Popular Science links are useless - they do a geo redirect based on your ip address, which redirects me to the homepage of the .com.au version of their site, which in general doesn't even have the original article available...