I've been looking through the last several months worth of fan posts and articles, and it appears that this community has been enthralled with the notion of a 3-4 defense and even a LEO defensive end. After giving it some thought, I feel as though a switch to 3-4 wouldn't be in the best interest of the team.
Moving to a 3-4 defense means dumping many players and filling the void with other players who would fit the mold. I understand that the Jaguars are in a rebuilding mode, but a wholesale change in defensive scheme is not what this team needs.
Also, if the Jaguars truly wanted to go to a 3-4, they would have resigned Terrance Knighton. Since there are only 3 men on the line in a 3-4 scheme, it would make perfect sense to have a wide body in the middle to stop the running attack. This is further complicated by the fact that CJ Mosley, who was recently released, is no longer on the squad. Mosley would too have fit well in a 3-4 scheme.
Now, I just looked up what exactly a LEO is and I myself am not too enthused about it. It seems too complex to pull off. Not many teams actually do it. I'm not really sure if any team outside of Seattle would even consider it. Plus with Gus gone, does Seattle go to a traditional 4-3? Probably so. I look at draft boards and people like Barkevious Mingo and Dion Jordan as a LEO, but I don't see it. I'm not too versed in the LEO speak to quantify why I don't like it, but it clearly won't work out for the Jaguars.