I don't know nothin' about playbooks, but..
I have been very pleased with Wright's emerging role and early production with the Pats. Not really a big surprise. He had proven NFL-caliber production in his rookie season with the Bucs.
His production with the Pats will always be limited by his snaps. His PRIMARY role with the Pats is to provide a pass-catching TE when Gronk is not on the field -- something they desperately missed last year. His secondary role is the snaps when the Pats are in a tw0-tight end package, and really a subset of two-TE packages -- the pass oriented situations. The number of snaps in that package will be game-plan specific.
With regards to the trade, it's all gravy. Polian said the fourth round pick, by itself, was more than the Pats should have gotten for Mankins (and Mankin's contract). His analysis was that the draft pick alone made it a good trade for the Pats. Just a little perspective on how NFL GM-types view these sorts of things (and the importance of getting out from under big cap hits for fading vets).