Labeling new offensive coordinator Bill Musgrave as strictly a West Coast offensive specialist would be a mistake, head coach Leslie Frazier said. For one, Musgrave wants to streamline the Vikings' terminology from the typical West Coast system, which often is verbose and difficult to absorb. This will speed up the process for whatever quarterback the Vikings add in the offseason — rookie, veteran or both — when it comes to learning the new system. Musgrave will bring elements of the West Coast along with Mike Mularkey's Steelers-style offense the two worked with in Atlanta the past three seasons. It will involve more rollouts, moving the pocket and plenty of play-action. If the Atlanta system is any indication — and after listening to Frazier's recent comments — RB Adrian Peterson should be the offensive centerpiece. The Falcons fed RB Michael Turner plenty in recent years, and Peterson is perhaps the game's best workhorse back. Expect another season of a heavy workload for Peterson, whose work can open up options in the passing game for others.