Perth and Christchurch, if both have the financial backing they need, should be next two clubs in. It would seem that Vlandys is doubling down on PNG happening so like it or not that seems to be where the next club will be, unless there is a major about shift from NRL or Govt.
The talk of three NZ clubs is fanciful, given the NRL's track record in NZ getting one more would be a massive shift in policy for NRL. They have historically been quite happy to throw NZRL scraps and plunder the NZ talent for Australian clubs. If that has really changed we shall see.