I think the Gopher stadium concourse is pretty good. Obviously halftime/end of the game it gets crowded. Never quite understood why there wasn't concessions/bathrooms up on the upper ring of the stadium. It literally pulls the entire stadium into one spot at halftime.
US Bank Stadium is absolutely beautiful when you are in the seats. The concourse is definitely weird. It is wide open, then it bottlenecks, then you have to go up/down escalators to get to seats, etc. Call me old fashioned, but just give me a loop around the stadium. The Metrodome actually had this part right, it was just much too small. US Bank does have many different seating levels, clubs, boxes, etc which I am sure adds some difficulties.
I am not an architect - just a simple man who tries to attend football games and as I am getting older usually results in 1 to 2 trips to the bathroom during that time.