User blog comment:DewK357/Total Drama losing it's touch?/@comment-7985501-20130719231133

All-Stars is 13 episodes they're only introducing one new cast not "two" and the reason why is basically Total Drama is a Survivor parody and Tom confirmed he wants at least 10 seasons before he's done. If they just stuck with the original cast and didn't introduce the TDRI and TDPI casts, the series would have gone stale FAST with the same boring drama. That's why they're introducing new people to form new drama even though they didn't fully develop the TDRI ones yet.