Comment This could take off... but (Score 1) 20
I like the idea and concept, but like Mastodon, you're a raindrop in the ocean unless there's an efficient way to collaborate and share. The "Federation" feature makes sense but the details of how that's done will really determine how useful the system really is.
I think one feature that would put PeerTube on the map, is an integrated way to stream directly to Smart TVs. If a content creator could roll out their own channel on Chromecast or Roku easily (keyword: easily) then they would have an angle that would allow them to offer something unique that you can't get from YouTube or Twitch.
It that's a feature, I'll set up a server right now.