Spectator view in queue
When a participant logs in and gets moved to the waiting queue, they only see a static image. In order to reduce waiting times, the waiting room can display the game view - however without controls - which would be especially helpful for conference demos etc.
Idea
In the server configuration add a max number of participants that can log in (e.g. 5). The first person to log in (primary user) will control the demo while the next four (secondary users) can view the demo in spectator mode. If another person tries to log in, they will only see the normal static image.