I'd love to see Piper/Paul win worlds but that's unlikely as long as FB/C are on the entry list and it makes sense they'll go since Laurence doesn't have a world title (or medal). I feel like Piper/Paul had such a magical moment at the Olympics that would be the perfect moment to end their careers on as it'll be hard to replicate such a perfect skate.
Even though they're currently on the entry list, I think there's a very small chance we actually see C/B show up and rightfully so. They have 3 world titles, why go for a silver?