While consolidating worlds has been a complete disaster(Super teams aren't so super against other super teams so owners jumped ship), it's certainly something that should be considered year round and not just when there's a "crisis".
Of course, all owners in a world would have to be on board to accept 5 teams from World A. And, naturally, the owners from those 5 teams would have to be willing to move also. In all likelihood, getting 32 owners to agree on anything is unlikely.