One of the biggest burdens on people running lemmy servers, is the disk space taken up by images. Currently the internet has a massive problem with image (and other data in general) duplication: images get posted to 9 different platforms, copied everywhere, with none of them sharing any of the hosting costs.

The static data distribution problem, is actually a completely solved problem: via torrents. The user experience of this tho, needs to be improved across the board in apps and web UIs. Lemmy's markdown fields do support torrent links, but there's no easy "upload audio" or "upload video" button, which ideally should hook in to an in-browser or system-wide torrent app.

I'd love to see comment trees of audio and video replies, but to me this isn't doable, and would explode server costs, unless someone devotes time to the solution above. In the meantime, people will just have to use other services to upload their audio / video content and link to it, or ideally, create torrents and share magnet links.