Add a "Streaming now" Section on Lobby just like "Tournaments" and "Videos"
It may take some work to have the list update constantly, but it is a nice way to encourage people to stream. Best if it can get integrated with Twitch so that anytime someone uses the Colonist game tag, it goes into the list.
This encourages streamers to use the Colonist tag instead of "Catan" and encourages them to play on Colonist instead of Catan Universe (which most do).
You want to continue building the community? This builds streamers' viewer base => attracts other people to watch their streams => new players