I would like to see a really developed story and plot behind the build. The plot its self should be profoundly wrong in some way (Flash Mob, torture, cannibalism, etc) and have a story around that aspect. Also its ok to have a few jumpscares here and there, but defiantly dont just have them. The main objective for the player should be to some kind of gruesome mystery with an insane twist at the end. Some movies to to see what im talking about are ShutterIsland and We are what we are.
Goodluck :)
Also remember that a server is never about player count. The max players you have is set based on the build, not the other way around.