I remember Super Bowls being played in Detroit and Minnesota. I also note that the NFL has not been back to those locations either. No one but the respective fans of the participants wants to attend a Super Bowl in the north. Charlotte would be borderline. The one year Jacksonville hosted it was ridiculed as a one-horse town unsuited for hosting such a world-level event. The Super Bowl in Jacksonville was Eagles Vs Patriots. There was in fact another Minnesota Super Bowl, 2017 in their new dome and it was Eagles vs Patriots.
As an Eagles fan every time they propose a super bowl in a place no fans would want to go I get excited, that will be one the Eagles go to.