So according to this interested clubs/franchises are: Hamilton Wanderers, Palmerston North Marist, Eastern Suburbs, Onehunga Sports, Wairarapa United (assumed), Western Suburbs, Tasman United, North Shore City and Auckland United. It says also that teams already competing weren't required to apply.
In my thoughts the new 10-team league would be: ACFC, Canty, Hawke's Bay Utd, Hamilton Wanderers, North Shore City, Southern, TeeDubs/Western Suburbs, Tasman United, Waitakere and the WeeNix. Have my doubts about Waitakere though, maybe Auckland Utd? Or Palmy?