I don't buy it. The sentimental part of me loves Sarge and misses him, but I don't believe it will happen. It is tempting, especially since Sullivan has departed, and Gonch could replace what Sullivan gave us on the PP and then some. However, what the Pens lack is physicality on the back end, and Sarge does nothing to help that cause. Also, when Michalek was dealt, Ray Shero said it was time to let the young guys play. You don't make room for the young guys by signing a 38 year old veteran.
I think the Pens go with 4 forwards on the PP again and play the umbrella with Letang at the top, Malkin and Crosby to either side (able to rotate to either half wall) and Neal with one of Kunitz or Tangradi down low. Basically Sid takes Sullivan's place. They tried that when Sid came back, but there wasn't enough time to get it clicking, so Sullivan went back. Now they will make it work. The second unit can have Niskanen and Despres on it with Sutter, Kunitz/Tangradi and either Dupuis or Kennedy, or Bennett if he makes the big team.
The only value Gonch has anymore is on the PP, and I think we have enough without him. I'd rather have a Hal Gill type.