Boston, Minny, Seattle, Detroit, San Fran / Oakland, Daytona, Nashville and Denver in the teaser video so I assume that a lock. Question is where they moving from? You know Anaheim will have 7 rounds. ATL is a lock. Saint Deago, Zona and Houston are sure bets. Either Indy or St. Louis have to be on the chopping block. New cities are needed to keep it growing. Philly / Pittsburgh, Baltimore / DC, Charlotte and New Orleans would all be good picks to add.
With Arena going the way of the dinosaur, that does open the way for a Minor league SX series. Could have cities like San Antonio, Syracuse, Columbus, Birmingham, Little Rock, Albuquerque, Portland, Boise, Fargo, Milwaukee, Jacksonville and Kansas City. All have Dome's or Stadiums that would work great. 125's, 450's and All-Star classes would be a draw. But, I am a dreamer