I just read the entire thread. Good read, but honestly not much in the way of what the B's system is. A lot of talk about very specific plays that certain players should be making. I may be wrong but I think the intent of this tread is slightly different.
In both threads there is a lot of talk about the box+1. I play hockey, and it seems to me, that is pretty much the default in zone defense. Essentially all in zone defense breaks down to man on man. I just comes to where and when you pick up your man. Aside from collapsing a bit more then other teams I'd say the B's play a pretty regular in zone D.
To my untrained eye the most significant thing the B's are doing different is in their back check. The B's seem to keep the defense man inside the dots and put back pressure from the center (or who ever 3rd man back is). When the defense man has the ability to stand up at his blue line he has the freedom to do so, with the center coming back if he get beat.
I'm going to watch the B's very closely on my dvr. I believe they play a 1-2-2 forcheck with a variation of the trap behind it. By definition those are two different thing that don't work together, but that's why what they are doing is out of the ordinary.
I don't at all know what I am talking about so any input from others would be greatly appreciated. These are just my observations.