Look at how long Stefan Brogren's hung around; he's been Snake since 1987!
While I'm kind of kidding there, I like the idea of one or two long-timers hanging around. I miss Spinner at the Dot. Don't you think it would be neat if he eventually became the owner, and succeeded that way? Then he could be a part of Degrassi's past and present...same as Snake.
I also agree with the "tail between the legs" feeling of someone coming back after such a [possible] huge public failing. We'll just have to see how Terra Nova goes. (Incidentally, I have no real compulsion to see it; I don't dig dinosaurs.)