Zadina, in particular, was given all the ice time a guy could ever want last season. Lots of games in the top six. Played with Larkin, Bert, Fabbri, Raymond, Vrana, Suter. Power play time. Favorable zone starts. His issue isn't lack of opportunity. His issue is that he blows. He's Mikael Samuelsson 2.0.
I'm not trying to air you out or anything, I've just noticed this narrative emerging that Zadina needs more opportunity to succeed. But he's had the opportunity and has been routinely outplayed by guys with the same chances (or less). This year he'll probably start on the 3rd line with Suter and Kubalik against inferior competition and given 2nd powerplay duties. If he fails to make an impact I presume he'll be traded/not qualified.