Have you looked at the hacker news API? There is enough information there to reconstruct a tree and do your own formatting. The only issue I've run into is that

Have you looked at the hacker news API? There is enough information there to reconstruct a tree and do your own formatting. The only issue I've run into is that after some time changes don't seem to flow to the API any longer so you have discrepancies between the site and the API data - mostly comment orders since the scores don't flow to the API, but updates to text often get dropped.