I completely get that "football in the cold" is a tradition, especially back east.
But we have technology now. Every new stadium should have a retractable roof. I'm sorry, but people and players shouldn't have to play in disastrous weather. The option to open/close the roof allows for you to have that great outside experience but also protect late-season games in bad weather.
I loved my years in Arizona. Early games in Phoenix, you knew you would be in air conditioning. The rest of the year, perfect conditions.
Early games at Arizona State? You'd be melting. Paramedics are routinely taking people, especially drunk people, out of the stands.