The culture of the MLB in the U.S. is very strong, in terms of expected performance. Fans, coaches, and players themselves, expect a high level of performance, and some will do whatever it takes to succeed. The subcultures that exist come from the viewpoints of the players, coaches, the MLB, and fans. Many players and coaches believe that players should do whatever it takes to win (including PED's), even without publicly admitting it. Fans like to see players succeed, but are split when it comes to PED's. The MLB is completely against PED's and are strongly trying to prohibit them. There are some people among all stakeholder groups who do not care about the players' use of PED's. On the other hand, there are stakeholder groups who are looking for a major culture change.
The MLB's new anti-doping policy is a major attempt to change the culture of PED's within the MLB. It is evident that it is an instrument of cultural change because of the suspensions placed upon players (Manny Ramirez, Alex Rodriguez, etc.) The new anti-doping policy is almost used as a scare tactic among players, instead of an actual policy. However, in many players' eyes, it is worth the risk of suspension to use drugs and perform at a higher level. The evironment of "winning above all else" in the MLB has shaped how players decide to play the game, which may include the use of PED's.
One major symbol, unique to MLB, is money. Because the MLB does not have a salary cap placed upon its teams, players can make any amount of money owners are willing to spend. Therefore, players strive to hit more home runs, steal more bases, and record more outs to increase their monetary value, regardless of their reputation. If a salary cap was placed on the teams in the MLB, players would not feel pressured to increase their individual statistics and a "team-focus" would be more evident. The roles of MLB leaders should be to promote a "team-focus" and re-determine their values and strategies, and attempt to de-value to the "winning at all costs" mentaility. One reward that could be given out to promote the ban of PED's would be to award individuals or teams with a bonus at the end of each season to reward for a clean record during that season. Stricter suspension rules could be put into place as well.
Plan to change the MLB's culture:
Unfreezing: Have MLB administrators change their efforts to focus on whole teams, rather than individuals.
Moving: Re-focus the players and coaches viewpoints on the good of the team, rather than the individual. Have teams focus on winning and championships, instead of the "winning at all costs" ethic.
Freezing: Reward teams for a clean record and continue to promote a team focus in baseball.
I like your plan to change Major League Baseball's culture. I never thought about it before, but focusing on whole teams rather than individual players makes a lot of sense. Holding a team accountable for a players action puts a lot more accountability on both the player and team. The fear of testing positive and hurting your team would be enough to keep me away from PED's. On top of that, players have to worry about their futures. What team would want to bring in someone who's tested positive and risk hurting the team as a whole? The risk of ruining their future potential earnings will also keep players away from PED's.
I'm not sure how you could reward teams for clean records, but possibly withholding draft picks as a punishment for a positive test might be a way to motivate teams to be a little more proactive.