I agree with Kirb and Drtooth. The guy's got talent! Just go see Being Elmo for proof! Clifford, Benny, Elmo, Baby Natasha, Hoots! Kevin Clash is probably the most versatile performer, you know, besides Jerry Nelson!
So if some of his characters came back, it would be great! Especially Benny! Since learning about the character I've wished to see more of him. But you know without the "Around the Corner" set, he really doesn't have a place to really have him.
Now, Hoots, he's not too rare, but I would like to see more of him. His jazziness, similar to Clifford and Electric Mayhemers, is a really good character quality that I'd like to see more on the street.
Aside from Kevin Clash's characters, I'd like to see Lefty the Salesman come back. Though, he might not be the best character for today's audiences. And I'd also like to see the Yip-Yip Martians and the Twiddlebugs to come back. And when I say the Twiddlebugs, I mean in puppet form. The CGI Twiddlebugs just isn't my favorite. Plus they made, like, only one of those sketches.