Is there the interest there, though? The big European leagues have been established for about 100 years, and there's teams regularly pulling in 50,000 fans every week as well as being known the world over. For MLS to get that, it will be a slow, long and painful process. The easiest way I can see it happening is that the US national team starts performing better in major tournaments and global interest in them, and knowledge of the players increases. That would inspire a few more fans - in Europe - to look at the MLS clubs more seriously. There's also the disadvantage that Europe is, really, the hub of the game and the best players are on display in the European Champions League - MLS can't compete with that, period. The best it can do for the forseeable future is to be seen as a base for a lot of very good players, like the leagues of Argentina and Brazil.