I think you should add a toggle for player visibility because at spawn it sometimes gets quite hectic and it makes the parkour verry difficult to complete! This would also be useful for Youtubers who would like to record their video introductions at the spawn (Me for example )
No support. - It wouldn't add anything to the server. - It's just not needed. - If you want to make a vid of the server, the people on the server need to be in the video. - If you want a vid without the people, there is a mod wich allowes you to download maps from servers. You could use that.
It's one of those things that would be cool to have but I don't think spawn gets so busy that it's needed. If it was implemented you will be able to see staff, but as it suggests not other players. So 50% support