Billick cause his team has only missed the playoffs once and that was with cassell and they still won 10 games.
Arians because he's aggressive and creative.
Tomlin because, rivalry aside, he seems like a cool down to earth guy that players would enjoy playing for.
Sean Payton and mike McCarthy would be intriguing but I think ultimately a payton team ends up being undisciplined and I think gb borders on underachieving with the qb they have