Here's what I'd be in favor of: 1. Even out the leagues - Whether it's adding two teams to go 16 each or moving an NL team to the AL to go 15 each. The only caveat for an odd number of teams in a league would be the need to have interleague games going on at all times. It doesn't bother the NFL/NHL/NBA to do it, it shouldn't bother MLB to do it. In order for there to be enough interleague games to cover the whole season, each team would have to play at least 11 interleague games (162 games for 30 teams, 2 teams per game). 2. Eliminate divisions - With the advent of the wild card, divisions mean less already than they did in the past. Even before the wild card, there were often complaints about one division being too strong, or too weak. A 15-team league could easily enough be tracked for a season. 3. Expand the playoffs slightly - Top 6 teams in each league make the playoffs. Top 2 teams get a "bye" as the other teams go head to head for one game at the home field of the higher seed (3 vs 6, 4 vs 5). The advantage this offers the top 2 teams would be to throw off the other teams' rotations while at the same time letting the top teams rest up a couple extra days and set up their pitching rotations. Also, none of this All-Star game decides home field advantage crap. Just let the team with the best record get the home field advantage, like in every other sport. 4. Reduce the schedule to 144 games - Start a couple weeks later, end a couple weeks earlier, the World Series can be done in October. Play 9 games (6H/3A, 5H/4A, 4H/5A, 3H/6A) against each team in your league, and 6 games (3H/3A) against 3 teams in the opposite league. One of the opposites can be the team you finished the same place as in the other league, while the other two can be formulaic in the same vein (i.e. top 3 teams all play each other, then next 3, then next 3, etc).