On the heels of Teddy Bridgewater's mostly promising rookie campaign, the team upgraded at wideout by trading for the fleet-footed Mike Wallace while saving $5 million in cap space by dumping Greg Jennings. Wallace gives the Vikings a bona fide No. 1 target to pair with the promising Charles Johnson. If Cordarelle Patterson can shake off last year's disappointing campaign and Kyle Rudolph can stay healthy, Norv Turner's air attack will soar. That said, the O-line needs help.