Personally, I agree with 757690's opening post. Yes, it's great if your team wins the World Series and your team is the MLB champ. Fair and square.
But it no longer reflects the best overall team for the whole baseball season.
One third of MLB now makes the playoffs. And then, there are so many hurdles that it becomes a short-term obstacle course. One game wild card playoff, five game DS, 7 games league championship. Only then do teams qualify for the WS.
If you really want the full season championship, abandon divisions, have the top two records in each league play each other and then the World Series.
Today, it's a matter of which team is best suited and hottest for/during post-season tournament play. The winner is the champ, but not always the best team in baseball over a whole season of regular and post-season games.