Hmm...I think its a little different than bring back, say, Joe Snow who WAS created as a one (or two) gag character. Whereas, Walter has many facets to his character. He's a complete geek, for example, which could be a better source of "geek" jokes than always using Scooter (who is actually more organised, than geekish). Walter is also a huge fan of Marvel, for example, and is an overly excitable, passionate and devoted fan of...whatever it is he becomes a fan of. In the same way that Gonzo is devoted to art regardless of the outcome, Walter is devoted to fandom regardless of outcome.