Pionk is the one that ought to be traded, not Heinola.
Personally I would not trade Pionk. He won us a game a little while back with a hard slapper, right under the bar. You could say he also won us that game last night against the Oilers. He's getting better all the time, and with Bowness pushing the defensman to join the rush, Pionk will put up a lot of points this year, as will Morrissey. Our 2 best hybrid offensive defenseman, are Josh, and Pionk.
Defenceman I would not trade right now would be Morrissey, Pionk and Dillon. I say Dillon because he's big and tough, and will protect some of our smaller talented players, which I think is very important, as players play bad when scared.
The 2 defenseman I'd consider trading is Heinola, who has not yet proved himself, and Schmidt, because of his Cap hit, and his age. The return would have to be very good, or right now, I'd just stand pat, as team chemistry is good. I should add that Heinola looks to be playing a lot better now, and with more confidence, but is not that strong in the defensive end, but getting better.