And glass exterior although some have claimed that is a no go due to weight (idk if that is true).
Finally choose one style and make that the plan for the entirety of campus. BYU has been a mishmash of different bricks, colors, and architectural styles. Find one style and move forward. Make the new stadium in that style as a sign of what is to come. Maybe style it after one of the newer editions to campus, the dorms by the creamery or the science building on south campus then continue with that trend.
Have better food options, more built in concessions stands, not concession stands or buckets in the middle of walkways, get a chik fil a in there, build a better store (that current store is embarrassing), get more corporate boxes.
So much potential but all I expect is a huge unveiling for a new sodalicious stand in the middle of the walkway under the south stands.