We currently live in a pre-flip time. To our grand children or great grand children, we will live in a world that is completely upside down. Nothing we do today will seem right from their point of view.
Our children won’t get cool mutant powers. But they might get cancer more. Before the switch, or during the switch, the magnetic field itself will flip about. We might even get more poles than just two for a bit.
Aurora borealis all over the world. Except it will be named wrong. And hopefully by the time it happens we will have cured cancer by then, so that won’t be a big deal.
But invariably, they will be able to look back on us and exclaim how backward we all were. Some things will never change.