Hi, Happy New Year! TBH, I don't think I could comment with any real authority on this because I've never worked in sitcom. That said, I don't get many mockumentaries across my desk in ANY format (features included), so I wouldn't believe they were especially in demand. BUT if somebody wrote a HILARIOUS mockumentary that's of "our time", I'd bet real money it wouldn't get turned down - no one would want to miss out on "the next big thing". But it would be a calculated risk, plus it's got to be something REALLY special.