Story Ideas with no OCs attached

Here is a quick run down of ideas I have but haven't built a character for it. I can do so if interested!

1. Arranged marriage plot

2. Assassin guild

3. A plot set in the Court of Thorn and Roses world

4. Newly turned werewolf learning the ropes / mating bonds

5. A plot set in supernatural worlds that have vampires, witches, all the way to ghosts!