Chopper's future and the bounty joke
It is a running joke in one piece that the world government thinks chopper is strawhats' pet and don't see him as a threat. They give him the lowest bounty possible, even below some small time pirates.
But what if chopper's fruit is a god fruit, which he hasn't unlocked the full potential of. Like how he slapped the domi reversi giants and cured them in an instant. If later, it gets revealed that chopper is in fact having a god fruit, which could challenge imu and the world government (given how he negates domi reversi, there might be more abilities) but still having a low bounty, it would make a great joke and a surprise. After seeing that chopper is a god, the government will increase his bounty to be 2nd to Luffy's and that's when the running joke will pay off.