1: Bounded infinities remain infinite. The infinity between 2 and 3 is exactly as large as the infinity from which it is taken.

B: Help from the world at large would be beneficial if there were large numbers of minions that had to be overcome for the heroes of the story to get to the object of their quest. Absent such a need, having the rest of the world show up to solve their problem would lead to a story similar to The Last Crusade, as told by Amy on Big Bang Theory.

Tertius: Half of the gods are ready for a do-over. Anything they order, encourage, or allow their minions to do would be countered by the followers of the 'save it' faction, and vice-versa. The rest of the world cannot help.