Mayoral election, 2027: Who is your candidate?

So, this sub has not exactly been a fan of Mayor John Whitmire, and I personally don't think there's reason to believe that the remaining years of his term will bring about a sea change in opinion. Our grouchy old mayor will be 78 by the next election. Assuming he runs again, who do you think should run against him? Please consider 1) civic leadership experience and 2) experience leading a staff/bureaucracy as you respond. Let the primary begin!