If I lived there I would catch half of them. I can tell you that most of the road games have better seating than LES. I still can't believe that the leg room is as horrible as it is, not to mention the 18 inches of width given to you.
Cut the capacity to 55k. Put in real seats all across the bottom half all around for starters, then put in real seats on both sides on all but the top 10 rows.
Improve parking: build a multi level structure.
Improve traffic: police need to close roads to outgoing traffic before games and switch it around after games. CSU does this, UNLV does this. I just don't get why BYU doesn't