I do like this idea but it would never work in the four major North American sports because  you could send the 4 worst teams to play the best teams from other countries  leagues and they would still destroy them.

That just sounds like a form of promotion.

Undisciplined

Seems akin to a two way contract in baseball. Haha.

grayruby

Two different things: each country has its own leagues, then there are continental contests. You cannot play in the continental contests if you have not performed really well in your local league the previous year. Best teams play at the same time in both national and continental.