For the Miami stadium I wanted something that was large and rather bold in style. After going with a semi-circular look the biggest issue was how to make it interesting. With the upper level I have it fully suspended from the center 'wings' that come up from the endzone element. The endzone circle element in front is open to the buildings it back and is meant to match the team's logo (last image).
I used and modified elements from the Kitbash3d's Oasis kit for the endzone and environment buildings.