It doesn't fit on any route really, UP retired most of them by the mid 80s, and having 6936 won't have much in terms of game play value.
Still would be awesome. Perhaps 6936 could be included in a second UP Heritage collection along with UP 4014, 844, and their E9 A-B-A set. 3985 could be added as a DLC later on.
I take anything American at this point as long as its New and different but has to be Freight as Europ DLC is by far the Best in game
It does have an enormous iconic look about it. Did (do) they sound any different to a normal EMD 645, though?