Comparing Saints to Packers transition to 3-4

Thanks for the feedback. I don't know much in depth stuff about how the Packers work, that's why I thought it would be interesting to see the reaction on SR, but the main idea is the same: which are the players that will really help the Saints in there transition, which will become afterthoughts, etc..?
Can anyone shed light on Dom Capers main principles and scheme design?