But yes, the 4-2-5 is a nickel D and we have seen it for the last 20 years under Lebeau. And they have used Harrison and Wood on the outside. They just get rid of fat ass on non running downs. I don't think definitions really matter, sometimes even in the 4-2-5 there is only ONE downed lineman and everyone else is standing up and moving around.
And I do think Woodley and Harrison get swallowed up by the ends more these days because the rules have clearly changed to slow them down. They are allowed to hold more. If not for that they would each be getting 15 sacks per year and in the passing oriented league there's no way the NFL is going to allow that.
At the site that is not to be named Tomlin talks about The Big Nickel package they choose to use against the Jets, that it provides versatility for them and allows them to match up from a personal standpoint and have a big body presence. He also says that they can use 3 corners and 1 safety in that base package. Tomlin claims there are more packages on the way for the season, because they have to have a variety. Good read encouraging info.
Tomlin mentioned in his PC that the big nickel was meant to provide some help against the run. The first time I saw it was third and medium - maybe 3 or 5 to go, something like that. It makes some sense -- keeping Casey in there to clog the middle while counting on a rush from the rest. I'm surprised to see that McClendon is not a part of that package - he's among the more effective inside pass rushers on the team.
I'd rotate the 4 bigs. But I think you'd get the most flexibility with Woodley and Keisel on the ends because one is a big OLB and the other is athletic enough to be an OLB.
I'd rotate a lot the way the Giants and Eagles do. Those teams get a lot of pressure out of their big guys because they're always rotating them.
It's nice to talk about this but its for naught if the QB goes no huddle and we can't get the personnel on the field. Just sayin'