Belichick won't do the same thing again that's for sure. They gave Allen time in the last game and hoped they could keep him in the pocket and he'd try forcing things. So I expect him to send a lot more pressure this time.
I don't know what % of plays McKenzie played against the Jets but against the Pats I'd have him on the field all the time, lined up all over the place. Usually Belichick will concentrate on taking away Diggs, but after what McKenzie did to them he's hopefully going to take a lot of the attention as well. So even if they use him as a decoy to get Diggs open, get him in as often as possible