Plinko
Wildcard berths that can't beat teams without a winning record should have homefield advantage
Not really as the only place to get good online throgh consoles is by Sony or MS. As long as Nintendo keeps dropping the ball on online, they have nothing to worry about.
Nintendo has talked up their online for Wii U for months, as have other developers.
E3 is going to be interesting. If the online sucks, that's terrible.