Top prospects are important to different teams for a variety of different reasons. They can serve as trade chips or eventually call-ups that can help a team's playoff hopes. These prospects can also often be the future of a franchise.
There are a number of prospects in the minors right now that look like they will become MLB regulars. These players have a proven track record of success in the minors or they were able to produce at a very high level in college.
Each of the prospects on this list have demonstrated that they could be able to help their respective franchise in 2012 or the near future.