I don't think they will miss a beat on offense, even without Graham. Adding Spiller and moving to a more run-oriented attack will help them keep their defense off the field, and even in decline Brees is going to be good for keeping the chains moving consistently between the 20s. Give Ryan more athleticism on defense and a little more rest and watch his unit be more effective in 2015. With that said, this shift may keep the Falcons up at night, but not the Panthers. Their offensive changes play to our strengths, so I'm not too concerned about them. It's on defense where they may cause a little trouble. They will have a better rush this year, but we have a mobile QB that can make a defense pay for gambling, something Ryan loves to do. And if we get them down a couple of TDs and force them into a passing game, that's when their losses at WR will be felt. In short, I'm probably one of the few around here that think the Saints will be better in 2015 than they were in 2014. But I think that the direction they're going is one that the Panthers will find favorable, matchup-wise, and we ought to be looking at a sweep in 2015.
One thing to consider that I haven't seen mentioned--this kid is at least a year away from being able to play well at the NFL level. People have mentioned his weight, and he needs that time to bulk up.
Any day three pick would be worth the gamble. I might even look at a 3rd, but that's only if I could get some good reassurances about his character. I'm sure that someone's doing some pretty intense investigation over there right now.