There are different ways the San Jose Sharks—coaches and management—each judge the importance of a player. Fans all have completely different measuring sticks, so any power ranking must come with narrow parameters.
Management has to decide whether to hold pat, buy or sell before the NHL trade deadline April 3. It seems unlikely the Sharks will hold firm, needing either to restructure for next season or make one more push, but they have to start by looking at what they have without any moves made.
The goal of any season is to make the playoffs, and the goal of the playoffs is to win a Stanley Cup—especially for a team with a closing window. Thus the value of each player is based on their ability to contribute to a championship right now and determine how far away the team is from contending for one.
Sometimes better players are not as valuable to the team. This list boils down to which players are more important to the team's chances at a title and cannot be lost to injury or trade without a comparable replacement.
There are a dozen such players—the "dirty dozen" that the Sharks will need to lean on to make a run to the 2013 Stanley Cup playoffs.