I continue to be really torn on what I would do if asked to pick between Roquan Smith and Harold Landry (which is silly, because I have no control but c'est la football).
Landry has a big advantage in positional value. The Packers need to find a future replacement for Matthews, should not count on Biegel being it. Edge rushers are premium players to begin with, and Landry is the best pure edge rusher in this class. Had it not been for an ankle injury, he would likely not be in play for the Packers at #14. Smart teams invest premium picks in premium positions (QB, ED, OT, CB). Landry's athletic profile makes him a really low risk player.
Smith has a big advantage in how much I want the Packers to draft him. If Jones is replacing Burnett at the SS, they need a WILL linebacker. They also lack a leader in the middle of the defense. Smith, by all accounts, has the ability, intelligence, and drive to be a tone-setter and leader on defense. He's also a missile with coverage skills. Positional value aside, he's a better and safer prospect than Landry. Pettine has also traditionally used the heck out of his off-ball linebackers in a variety of roles.
For example, here are David Harris' four seasons under Pettine:
2009: 127 tackles, 5.5 sacks, 3 PBU, 2 INT
2010: 99 tackles, 3 sacks, 3 PBU, 0 INT
2011: 86 tackles, 5 sacks, 8 PBU, 4 INT
2012: 123 tackles, 3 sacks, 3 PBU, 0 INT
Pettine was also Kiko Alonso's DC his rookie year when he exploded onto the scene with 159 tackles, 2 sacks, 4 PBU, and 4 INT.
Karlos Dansby had a pretty nice late career surge under Pettine as well.
Pettine's pattern suggests that he likes to feature a linebacker and asks a lot of that player as a run defender, pass rusher, and coverage player. If that's what he wants to make the whole thing go, it would be hard to find a better option than Smith.