I think Shero needs to go, but I'm suprised Pens fans want him gone too. He's made some good moves like trading for Neal and signing Vokoun, but he's made just as many bad moves trading Joe Morrow for a rental, signing Letang to a big deal when you already have very little cap space, not acquiring a veteran back up for Fleury (for this year) after he fell apart in numerous playoffs already. Re-signing Scuderi, trading away Michalek, one of the few defensive d-men on the team. Pens fans get so excited when he signs or re-signs someone to a big contract or makes a big trade and rave about how he's "all in" and he's a "gamblin man!" and now that its all backfired on him, they want his head. Its like when the home crowd urges their team to go for it on 4th and 1 and then when it doesn't work says, "well that was stupid! what were you thinking?!"
Trotz is a great coach and has a history with Shero, so maybe Shero stays as a way to lure him to Pittsburgh, but I don't think things will get better for them this way. Trotz did well in Nashville because he essentially had a bunch of nobodies that listened to everything he said and played his system to a tee. The Penguins are the opposite of that. A new coach won't improve their salary cap situation nor will it prevent Shero from taking risky moves.