I had hoped that Martin Short would be able to call in favors from his really famous friends. Aside from Selena and other OMITB castmates (but not Steve Martin), the only other celebrity with a connection to Short seems to be his old SCTV pal Andrea Martin.
Selena Gomez is a pretty solid get. I doubt Steve Martin would do the show; he hasn’t done a game show since the Marshall version of
Hollywood Squares in 1977.
It would have been nice to see Maya Rudolph, but she’s not on the list. Most of the people with whom he did
SNL wouldn’t be worth putting on today, except maybe Billy Crystal (EDIT: and Julia Louis-Dreyfus).