There is no doubt in my mind that the biggest improvement needs to come from the defensive line next year, starting with the tackles.
The Hurricanes do return both starters, but that is far from being acceptable as the tackle position was one of the biggest reasons why the Hurricanes struggled last season.
Olsen Pierre and Curtis Porter will most likely be at the top of the depth chart heading into next season, but with as poor as the tackles played last season it should be a free-for-all on who actually earns it.
Pierre started all 11 of the games he played in but truly wasn't much of factor finishing with just 27 tackles (five for losses), 1.5 sacks, two quarterback hurries and two forced fumbles. Besides the forced fumbles, Pierre will need to improve every aspect of his game.
Porter on the other hand could be the big difference-maker if he is able to stay healthy. Last season, Porter missed a lot of games due to appendicitis, but he has the athletic ability and size to help out the tackle position.
The problem with Porter is he is entering his junior season playing in just 15 games. Hopefully all the injury issues will be resolved and we see him on the field for all 12 games.
The depth at tackle should improve with so many underclassmen getting game experience last season, but we won't really know until they get on the field.
Corey King, Earl Moore and Luther Robinson combined to play in 31 games last season. All of them must improve or we may see another horrible season from the Hurricanes defense.