Admitted WVU homer here.
The key problems for WVU last season were KO coverage (near last in ncaa) and offensive line play (simply unable to convert short yardage situations).
Last season the offensive line had their 3rd OL coach in 3 years in Dave Johnson. By most accounts, they were an overrated unit that came in out of shape, and didn't buy in to Johnson's changes in technique. This season's group will be led by former 5star recruit Josh Jenkins(soph). They are young and inexperienced, but talented. I expect them to grow and jell as the season progresses in year 2 under Johnson. Reports are good, they are buying in as a unit so far. Johnson coached several All-Americans between Georgia and Marshall, so I do not doubt his ability to coach. Also, there are some power backs now in Morgantown to get those short yardage situations converted that I really like.
As the offensive line goes, so goes the offense. Everyone knows Pat White is gone, but the ball will be in the capable hands of Jarrett Brown. Pat White had one year under new OC Jeff Mullen. He helped turn PW from a potential NFL WR into a 2nd rnd draft pick at QB, and was also credited with developing R Skinner at Wake. Jarrett has had a year in this system, and posesses greater arm strength and touch. Pat White was one of the greatest winners in college football, but I think you'll see the passing game blossom in yr 2 under Mullen's watch. There are plenty of weapons at the skill positions in Devine, Jock Sanders, Tavon Austin (FR), Bradley Starks, and Wes Lyons (6'9" WR/Slot who the coaches are extremely high on. dominated the spring game).
The Defense was a suprise last season, since so many players were lost from the Fiesta Bowl winning team (including heart and soul MLB Reed Williams, surgery on both shoulders who is now back for his SR season). The secondary was so thin that slot receiver and former QB, Brandon Hogan was moved to DB in August just weeks before the start of the season. He had never played corner before, even in high school. He struggled early, but came on strong as the season progressed, and is considered a stand out in the BE. There are 3 coaches on defense w/ DC experience including David Lockwood (corners) and Steve Dunlap (Safety). Both are major upgrades from the former staff in terms of coaching/teaching (on a side note, Michigan fans may enjory their new offense, but they should be ready for some high scoring affairs as the asst coaches on defense are horrid). WVU's defensive front is deep and talented (especially if 5star DE Tevita Finau makes it in and it looks like he will), but the LBers will be the stars of this show with Reed Williams back in action.
Concerns are Kicking/Punting (lost all-time leader in Patty Mac) and depth at QB. Highly touted incoming FR QB Gino Smith broke his foot, and will be out until August. That makes WR Bradley Starks the backup early in the season. If Brown goes down, WVU is in trouble.
Bill Stewart has taken a lot of heat, some deserved, some not. I will say this though, he took less money to bring in a fantastic coaching staff. Recruiting at WVU has never been better. We'll see how he does in year 2. He's 2-0 in bowl games with a wins over Bob Stoops and Butch Davis.