Agreed. What might have been lacking in further developing this stadium beyond it's initial state form 1974 is an overall vision how the stadium could be made basically twice as large, and incorporate new facilities and amenities. That is showed in the stands that are different from each other and also do not really connect well to each other. Just like Old Trafford has this to a certain extend.GEwinnen, you compare apples and oranges. The Westfalenstadion in its core is from 1974. The first expansion of main and opposite stand was started in the mid 90s. I'm sure if the club and architects could start all over today with the 1974 stadium as basis they would do alot of things differently. Still they couldn't start from scratch and plan every detail without barriers or restrictions as was done for the Arena Auf Schalke. It was a year-long process, and in my opinion lead to a great stadium and I always liked to be there-despite its flaws.
And atmosphere is created by people, not by concrete.
And without a fanatic and enthusiastic crowd no stadium in the world will have a great atmosphere to play in, no matter how beautiful and good the basic design of the stadium is.