The list seems a bit skewered against pitchers to me.
As for the playing topic, one that I've seen making the rounds is no AL/NL and it would be temporary leagues/divisions based on Spring Training locations. From what I've seen, it looks like this:
Florida:
North: Yankees, Phillies, Tigers, Pirates, Toronto (basically the Tampa area)
South: Red Sox, Twins, Braves, Rays, Orioles (Fort Myers/Port Charlotte/Sarasota)
East: Mets, Nationals, Astros, Cardinals, Marlins (Palm Beach area)
Arizona:
Northeast: Cubs, Giants, Rockies, D-Backs, A's (Scottsdale/Mesa)
West: Dodgers, White Sox, Indians, Reds, Angels (Glendale/Goodyear, with the Angels kinda stuck out in Tempe)
Northwest: Brewers, Padres, Mariners, Rangers, Royals (Peoria)
Overall, the Florida league would be crazy and very unbalanced. The North would likely be dominated by the Yankees, with the Phillies and Blue Jays being decent and then everyone beating up on the Tigers and Pirates. The South could be fun to watch, with the Rays, Braves and Twins all having good teams and the Red Sox still have some talent. The East could be entertaining with the World Series rematches plus solid Mets and Cardinals teams.
The Arizona league doesn't have quite the talent...Dodgers would likely run away with the thing, with Oakland being the only other team that I think would have a strong chance of emerging out of there.