Now that we're one week removed from Super Bowl XLVIII, I think it's safe to say you have all read a "What Can the Eagles Learn From the Seahawks" post by now. (Especially because I wrote one of those myself.) These type of posts focus on the topic of championship-level team-building: how to construct a roster, what makes a great general manager, the importance of a good head coach and quarterback, how defense wins championships, etc. But all of these posts missed the most crucial aspect of how the Seahawks were able to be so successful in 2013: CenturyLink Field, their home stadium.
Seattle is so famous for their fan support that it even has a collective name: "12th man." Their crowd is very loud, which makes it a very tough place to play. The Seahawks are an astonishing 17-1 (including playoffs) in their last 18 games played at home. So how do they do it? A thorough look at these comprehensive diagrams will help you understand:
Boom. As you can see, the Seahawks' stadium is built to keep noise in. The Eagles' stadium is aesthetically pleasing, but there are too many gaps where noise can escape. So forget about all that "on the field stuff". If the Eagles truly want to win the Super Bowl in 2015, all they need to do is to make the appropriate changes to Lincoln Financial Field.
The Seahawks Super Bowl lesson will never be more clear: giant roof things wins championships.