Maybe Matt Vogel could take over Herry. I know Tyler Bunch tried it out at a recent event in Hartford CT, but to me it just didn't click. Right now, Matt's busy filming the Muppets sequel, but I could see him performing Herry for a while. He's inherited so many classic Jerry Nelson characters from the Count and Floyd Pepper to Pops and Crazy Harry, so why not Herry?
Besides, in the aftermath of the Kevin Clash scandal, there will be a greater need for more Muppets. They can't rely on just Abby, Telly, Murray, Rosita, Zoe, and Baby Bear. Maybe they will bring back older Muppets like Herry, the Count, and more of Ernie and Bert (not the claymation versions, but the real puppets that can be used in street scenes).