Isn't that the implication of what you're writing? That LBS that were performing well under Edsall couldn't do the job in Brown's D because they weren't athletic enough or didn't get enough plays off?
No. No. No. Go back and take the time, if you've got it to actually watch the two cut ups I've put up. Pause and play liberally. It will take a good 1/2 hour to do it if you're not used to looking at clips. The linebackers are plenty athletic enough - two of them were new by the way from 2010, and only one in 2011 played regularly under Edsall anyway. I'm not arguing that they need plays off. I think that a LOT was asked of those three players, adn they performed as well as they could, adn that fatigue was inevitable. Go to the film.
#1. I think that an attack style, pursuit, horizontally and vertically, constantly - by the linebackers, is more physically taxing, than a step, read nad backpedal or pursue type of play. The style of play in 2011, was that attack/pursuit, while the style of play in 2010.
#2. If you look at the film from 2011 especially, we are in all kinds of different formations on defense, 3 man down, 4 man down, all different kinds of spacing and pressure from different places. We did it all witht he same 3 linebackers. I'm saying that with all those different looks, and situations, it's ideal to have specific personnel groupings to run in and out. a fourth linebacker to bring in and out, will give the defense flexibility it didn't have in 2011.
I think Jimmy was talking aobut nickel coverage packages (5 DB's). Well, another option to a nickel, espeically if you're going to put 3 men down on the line, is the extra linebacker, rather than the extra DB. We were pretty effective with nickel coverage packages - I think - last year, but you give up a lot in the front by doing that regularly, and you need to be able to stop the run first and foremost and always.
So it's not about spelling, or resting linebackers on purpose, it's about the style of play that the dfense brings, and having designed personnel groupings, with enough players, that by default, keeps legs fresh.