I would like to suggest offering players the ability to choose color options for the stadiums. Red seats, blue canopies...gold details on the retail center...red, blue, and gold parking... We're all stuck with the same look but it would be nice if the canopies/windows, seating, building roof, and other details reflected my clubs colors. None of those colors work for my Black and Green club jerseys. Maybe allowing our team logo to show up on some buildings would help as well.
The building trim colors could be updated just like our jerseys are; by selecting 2 colors. The just put our logo on the stadium, training center, retail center, and academy.