So I see no real reason to worry.
That being said, Sean does move things around and there may be no space left for some shows (hopefully not Funday Monday!!)
I was curious about something though, and this thread does seem to be just the place to ask :) :
If one of us were to take Sean's place and make a Funday (Some)day would you guys want to watch such a thing? Speaking only of myself, a new comer won't have Sean's charm and puns (at first at least) but with a regular show he/she would improve in time.
I often wanted to start making a show to Fun-cast the games that have been left out by Sean. Is there any interest in this?