Your main character already has time fart powers so the timey whimy junk is already plausible.
Wait sense the games are cannon to the show that means Kenny has interacted with the New Kid and knows about their Time Farts knowing time travel is possible
I’d really love to explore the future of South Park and what has happened to everyone and have a boss fight with Victor Chaos.
I just hope they change their fucking mind about that shitty 3d idea.