Ideas for a Server

Hello, I'm currently looking for a good idea to base a server off. If there's a type of server you haven't seen out there and would like to see, post it here and if I think it's good enough, I'll base my server off of it. If you're experienced at setting up plugins, know your basic plugins, etc. and would like to help, just say so at the end of your post. When stating your idea, please be as descriptive as possible and make at least a short paragraph describing exactly what you want.

By posting your idea, you're consenting to me using it.

Please no ideas about a giant factions server or creative server unless it's a truly original idea.