I don’t like the concept of only showing this one video in the dashboard because I’m pretty sure that most of the people who have access to the closed beta have already seen the trailer once or even multiple times before.
I know that the current videos are outdated since the client uses a different chat system now, but in case they create new videos with the new system (which would be optimal) then I’d like to recommend the idea of creating some kind of playlist that once a week automatically changes the video showcased in the dashboard to one of the tutorials you guys made. 
