I don't necessarily believe that they need to make a big splash. There are some moves I'd like to see and being proactive in free agency is necessary. They should've done more last year, but that's neither here nor there at this point.
The way I see it, our obvious holes are:
LG
RT (until Steele is healthy)
DT
LB (re-sign LVE and it isn't a necessity)
WR
Da'Ron Payne would be my first priority and I'd be willing to throw some money at him to bring him in. He's your missing link on defense and covers up for our needs at linebacker, and lesser needs at corner.
A good, speedy pass catcher would be nice, but if you fill up the offensive line with the right kind of players, it wouldn't be necessary. Bring a couple of killers in the run game, draft a RB or two and stick with the formula that was successful early this season.
A dominant run game and defense do well to cover up some warts in the passing game. Truthfully, it wouldn't take much to make that a reality, and they have the means to make it happen. The spotlight is on the Jones clan, but that doesn't mean they need to get stupid with the salary cap.