How many times have we heard this? We need to get an "impact player" at CB in the 1st round. "We can't select so and so because he'd take longer to develop"....so on and so forth. But lets look at the current roster....
McKelvin or Cromartie have the most potential of all the CB's in this draft. The fact that they went to small schools and might need some coaching shouldn't be a factor b/c theres little chance any rookie corner is anything more then a dime back his rookie year anyway. Expecting any drafted corner to come in and start (on a team that has already signed a starter in FA no less) is unrealistic so don't base your grading of CB's on that.