[annnoo]

It already became a thing. At least in Germany there are a couple bigger Twitch streamers, which hired the persons who already made good, unofficial montages or "Best-Of" videos about them. If I am correct they get a share of the YouTube revenue.

In my opinion this is a great deal for both. The streamer can broaden his audience by having an official stream highlight YouTube channel, the fans have more content and won't miss anything and the amateur video editors are getting a chance to do their passion more professionally (well, most of them had already good, YouTube focused editing skills)