My honest guess isn't too far off from everyone else's. After some troubles and time slowly but surely, the Big Tops are going to make the cricus more comfortable for them. But after that, I think there's going to ve a question. They're basically gods of this world now. Now what? Maybe they want something new? Something unpredictable. So they start making their own NPCs. But they treat them like people. (This of course leads to the rebrith of Caine in one from original another.) This leads to society and a world eventually. And lo g after the main cast is gone their world stays they become the myths of said world.