Don't hold your breath, amigo. One of those is from early '08, and the other is a former player, speculating out of his butt.
As for Domestic expansion, they're likely going to have to relocate a couple of franchises as it stands - and even after that, there are still a few more available markets they'll be looking at.
A pro league can't just add 5 teams, man. Think about how the talent level of the league would be watered down. A lot of people think the talent has been watered down enough already.
The idea is romantic, but it's a logistical nightmare on so many levels.