Fiercely Independent **1/2
THE MARRIAGE GO-ROUND: FIERCELY INDEPENDENT By: Samuel L. Leiter March 9, 2019: Broadway producer turned playwright Kathleen K. Johnson's Fiercely Independent, now at the Soho Playhouse,is a mundane drama of marital discord. Something of a defanged Strindberg (or Albee) exercise, with its venom drained and its character insights and local color washed away, it's set in a conventional hotel room (designed by Wi…