Continuing with the off-topic discussion on who is playing where, in the injury report thread:
I think many of us, myself included, think back to the classic Patriots 3-4 of the Super Bowl years and picture Mike Vrabel and Willie McGinest as the archetypes of the versatile pass-rushing 3-4 DE's - and see players in the 6-5 265 pound mold. We forget that Belichick also turned to Rosevelt Colvin and Tully Banta Cain in that same role, and those guys were 6-2 250 pound types.
That says it's not impossible for the Patriots to rotate Hightower, Collins, and Fleming into that role.
Rather than debating OLB, MLB, DE, and DT roles, it's more like Edge, Interior DL, and Off-the-Line LB.
In those categories:
Edge: Chandler Jones, Ninkovich, Collins, Hightower, Fleming, Buchanan, Moore (Easley, Jones, Vellano)
Interior DL: Wilfork, Chris Jones, Silinga, Easley, Vellano (Chandler Jones, Moore)
OTL LB: Mayo, (Hightower, Collins, Fleming) White
Many of the players offer versatility to play in two of those three categories.
Like the "Indy Scrum" defense the Patriots threw out to confuse Manning in the AFC Championship game years back, it will be hard for offenses to know what the defense is until the ball is snapped.