Obviously it will never happen but let’s throw this out as a hypothetical. You wouldn’t have any current NFL players on a roster, so no dream team. On the US team you would have players who couldn’t make it into the NFL and ex NFL players who got cut maybe some 1st rd busts like Johnny Manziel.
For countries maybe a couple in Europe, Japan, Australia, Canada, Hawaii could have it’s own team (a US a and b team).
For countries maybe a couple in Europe, Japan, Australia, Canada, Hawaii could have it’s own team (a US a and b team).