The Malaysian U23 squad is playing in the Queensland NPL. If Phoenix can't join the NYL something similar might be an option?
Surely one of the state federations would do a deal??
ETA
Thinking more about it, maybe Tasmania might jump at the chance to host a Nix youth side in their league. It might help to generate a bit of interest down there. Could even include a one off game each year - Phoenix youth vs Tasmania youth - play for the "Island trophy" or something...
Tassie federation might even chip in some coin??