He's now clarified that he's looking in particular for people who actually ride Muni (something that the mayor himself can't be bothered with).
The current list of board members includes five who describe themselves as regular transit riders.
However, it's not clear who is leaving -- the San Francisco Appeal thinks it might be
Chairman Tom Nolan and James McCray (see update, below), two of the members that describe themselves as Muni regulars.
Meaning if only one new rider is appointed, the balance of power could shift back to non-riders.
The SFMTA has not responded to calls and emails requesting clarification as to which board members are on the way out.
Update: From the SFMTA, "The SFMTA Board members whose current terms have expired are James McCray and Shirley Breyer Black. They are able to continue in their posts for 60 days."
Meanwhile, efforts continue to put together an organization to lobby for riders, modeled on the San Francisco Bicycle Coalition which has won a number of victories for cyclists in City Hall.
Jackson West wonders why you'd volunteer for the board if you didn't ride Muni regularly.