The Texas Longhorns will once again head into a season with sky-high expectations of being one of the top teams in the country and competing for a national championship. Those lofty expectations placed on the Longhorns aren't coming out of left field with Texas having one of the most talent-loaded rosters in the country. The Longhorns find themselves with some of the top players in the country at their positions on both sides of the ball. Texas' defense in particular will take on a new identity as Will Muschamp takes over as defensive coordinator. And headed into the season, here's a look at the confidence level for each defensive position group. 1. Edge Rusher Texas Longhorns defensive end Colin Simmons tackles Georgia Bulldogs quarterback Gunner Stockton. | Dale Zanine-Imagn Images When the position has one of the top players in the country in its room, the position group is pretty secure, and that's the Longhorns edge room with Colin Simmons.…