I absolutely think he should be in the lineup. I absolutely think he can help on the PP.
I think he can help on shootouts. I think he's the best player on the team on a breakaway.
I think he's one of the few players on the team that can individually make something happen on his own spontaneously.
In short, I think he can contribute. Just my opinion. I know others will disagree.
Problem is, I think he becomes a big liability in the playoffs when one of his defensive lapses can blow a game, and one blown game can be a big deal.
Is he good in shootouts? Yes, but they don't exist in the playoffs. I don't think he's going to make a big difference on the PP, either...he may be a small boost, but it's not like he single-handedly makes us potent.
So in short, I don't think he can be responsible enough in the playoffs to dress for us...therefore there's no point in playing him now.