I'm wanting to create a roleplay and I need help! Some of the themes I thought.

I was thinking of opening a roleplay! So I thought of doing based on one of this themes.

1 - Percy Jackson.
2 - Harry Potter.
3 - Nightmare Before Christmas.
4 - University.
5 - War of Magic Creatures (Based on "War of the Fae")
6 - School for rich (with poor people entering).

If you have any other idea, you can tell me! ^^