Guest Hosts
I really like the idea of returning to an era featuring guest hosts. There is one thing that tv does not need more of, and that would be any reruns of talk shows. I realise that this pratise began after the original Tonight Show fiasco, but since the stabisation of talk shows over the past several years, I enjoy this return to formality. I doubt it would have entised Ferguson to stay longer, but I think the quality of his show would not have declined as rapidly had he utilised guest hosts from time to time.
I hope Colbert decides to go in this direction as well. There is nothing more redundant or absurd on television these days than to rerun a talk show, but the only way to effectively avoid that is to bring in a guest host to fill in during off weeks.