I suppose the advantage this would provide would be an easily-accessible central point for all of a given user's images and their related discussions. Rather than scanning through a thread to find an image amongst many, with discussion mixed in, you could bounce between users checking out their screenshots, and looking at the discussion for only the images that catch your eye the most. It would essentially serve as the page you have on your website at https://notes.neeasade.net/rice.html, except with comment support and users don't need their own website.

btw - just seen your landing page and god damn i wish i had thought of it, it is beautiful