Discord's Go Live streaming feature is the main one I'm interested in, though video calls would also be useful.

Obviously, this is a monumental task, even one-platform video is hard, let alone cross-platform, so I'm not expecting anything finished right away, more of a holding ticket for the feature. But I think Ripcord could do a much better job than the OG, especially if there was a way to dock a call/stream while in other channels.

I'm unlikely to do this. From here: https://dev.cancel.fm/service_features

"Supporting video calls requires using codecs which dramatically increase bloat and attack surface"

It really increases the complexity of the software (not to mention the download size). It would be a many-months thing to implement this, and come with a bunch of tradeoffs that would necessarily make other parts of the software worse, forever.

I realize lots of people want this, but your best bet is to just open up the official client or a browser tab for when you need this. Ripcord is meant to be relatively lightweight and nonintrusive -- neither of which are possible if it has to deal with video codecs.