This twist is called Revenge. I think that a unique twist would be that in a 20 person cast, they will merge at 11. The previous 9 eliminated contestants will come back to eliminate one person making it final 10. The person eliminated will also become the first jury member. I think that this twist will put more strategy into who people eliminate. The 9 previously eliminated contestants can either choose to help their team by voting to eliminate someone who was on the opposite tribe, or they could seek revenge on someone who was on their tribe.