This is nit-picky but I'm a fucking nit-picky douchebag so I'm going to say it anyway:
You mentioned 'the Seahawks would only get to the Super Bowl if they play the Packers in the Conference Championship because otherwise they'd play the Falcons and 49ers who are two dome teams playing at their comfortable home conditions'.
The 49ers play in Candlestick, which is not a dome, and is natural grass and is famous for having bad muddy conditions. That advantage would go to the home team used to playing in those conditions regardless, BUT WHATEVER, I'M SORRY, I HAD TO SAY IT.