Here would be my best possible 6 wish list to choose from:

1) Devon Still- DT - would be great addition for rotation not sure if we need to use 1st pick on DT though- this is deep draft for DT.
2) Doug Martin-RB- would be awesome due with Bradshaw as the powerback plus is very good receiver and good pass blocker- some have compared him to Ray Rice (probably due to his size)
3)Coby Fleener-TE- tremendous potential and could exploit most LB and S who try to cover him. Imagine Eli having him to throw to over the middle and down sidelines. If you like Ballard you will drool over this guy. Again- with Martellus Bennett here not sure this makes the most sense.
4) Stephen Hill-WR amazing size and speed- would make us forget Mario real quick. He also is a good character guy in locker room.
5) Mike Adams- OT- his stock is rising and we could have great bookends to protect Eli for many years. Other OT that is jumping up draft boards is Bobbie Massey who also may be nabbed end of first or beginning of 2nd round.
6) Dont'a Hightower- ILB - just to round out most of our needs- throw this guy in the mix- powerful instinctive player- always seems to be around the ball and making plays. Again- not our highest need.

Imagine having to pick between these guys- that's why they give JR the big bucks. Could not go wrong with any of them IMO- leaning toward Doug Martin though!