[MayeulC]

Well, webtorrents are just regular torrents using websockets as a transport mechanism, since you can't just have raw sockets from a browser sandbox.

If it supported these as a transport mechanism, transmission would be able to communicate with torrent clients that run in the browser, making the potential number of peers much higher (both for swarms that are mostly in-browser, and for those that have a majority of traditional clients). It would be very useful for seeding peertube videos from transmission, for instance, which was the quoted use-case.