I am not against Adelaide and Perth having teams, I just think it would be detrimental to the game if a new licence was reseved for them. We all know that heartland areas like Brisbane and NZ aren't going to accept a relocated team from Sydney. Too much history and rivalry between the areas for it to work. Adelaide and Perth don't have any history or rivalry with Sydney, at least not in RL.
Nine teams in Sydney works now, but there may come a time in the future where the economics and inroads from other sports drives one or two of them out of business, or limits their potential to compete with the other Sydney clubs.
I think the Tigers could benefit from teaming up with Perth. They're already a merged entity, albeit with one side of the merger almost dead. Keep the strong side (Western Suburbs) and ditch the weak arm (Balmain). Replace the Balmain side of the merger with a Perth consortium. Make it 50:50. Team could be the Western Tigers or Western Australia Magpies. Using the black and white colours of Wests would help the club stand out from the other sports teams in Perth. Six games in Perth. If it's a huge success bump the number of games in Perth to 8 or 10, with a deal for members in Sydney to have seats reserved for them when the team plays 'away' to the other Sydney clubs at West Sydney Stadium, SFS, Stadium Australia. There's less risk in this strategy than starting a team from scratch in Perth.