This is probably common. The people that work on UI often aren’t the people who do pull requests. But I think if you want to contribute it would be best to get in touch with a maintainer on the chat of the project. Projects often have a matrix/irc/discord on the git page.
I want to see how you can serve thousands or millions of people with a Chromebook in your closet. And if you say p2p, that doesn’t deal with spikes in demand and a lot of old content will just vanish even easier than on YouTube. Also it would rely on people being willing to seed.