I can watch world class Snooker all day but can't sit through a game of NFL, and I understand exactly what both 'sports' are trying to do . . . in NFL it's the need to use hype like they do artificial meat in their burgers I don't like
The artificial meat clearly works then... $11 billion+ in annual revenue, the most of any sports league in the world.
Your posts show a clear lack of understanding of the game, which is fine, not everyone is into it. It is however an extremely popular sport, not just inside the US.
Here's a tip, rugby league players aren't necessarily the best athletes in the world, neither are NFL players. They have specific skill sets for their relative codes with some similarities. I'm sure there are some NFL players that could make an impact in the 2nd row, center or wing positions, just like there are a few league players that might make be able to make it over there as well... Any 'code-swapping' wouldn't revolutionise the game or teach the relative code a thing or two however.
Hayne to be honest, has been a massive shock that he has gotten as far as he has, but even then he is a fringe player and it could take a number of years to go beyond that... He has a more versatile skillset than many NFL players, but he is a master of none of them in comparison at this point in time.