There was NO way they were going to break up the Brewers, Cubs and Cardinals. Zippo chance on that one. No matter how bad the Brewers may be in a given year, when the Cubs come to town they are filled to the rafters. Right now that is not an issue for the Crew because they are really good, but that too will cycle. Two teams 90 miles apart in this part of the country is not the norm. The only thing that would make it even better for MLB would to be to throw the Twins into the NL Central. Their rivalry with the White Sox is good, but it would be that much better with the Brewers and the Cubs.
Heck, they could realign in a major way and really create a much better set up for the fans.
Florida
Tampa
Atlanta
DC
Baltimore
St. Louis
Chicago
Chicago
Milwaukee
Minnesota
KC
Denver
Arizona
Texas
Houston
Anaheim
LA
SD
SF
Oakland
Seattle (sucks but you need a 6 teamer to make this really work - and Seattle is to hell and back for every other team anyway)
Detroit
Cleveland
Pittsburgh
Cincinnati
Toronto
New York
New York
Boston
Philly