Guentzel is one of the best, most under the radar players in the NHL. If he is to be traded, it needs to be for something very, very good. Off the top of my head i have no idea what that would be. If PIT was a normal team, I would say trade him for multiple 1sts, and/or young prospects. They are not, however. They still have one of the best players on the planet, and another one who can be dominant when healthy, as well as another superb Dman in Letang. Until they retire or are moved, there is no point rebuilding.
Might as well shift around lesser players, and hope they catch fire somehow.Addison can probably be had for cheap. Not good defensively, but he's only a rookie(IMO, Evason was on a mission to destroy his confidence), and runs a PP very well. I am guessing a 2nd might get him, maybe a bit more?
I don't know what to make of Granlund at this point. He can be a vg, smart player, but it could be that stints at two of the most offense hating teams in the league, NSH and MN, have finally killed all of his skill. Nevertheless, he could be a new player when he comes back next year, and contribute.