It would be amazing to have that! The benefits would be that they’re playing against senior opposition, playing a full tournament as a team and they would be capped.
I should also note that the U23 Tillies won it with a team comprised entirely of under-23 Dub players (and their biggest win was 9–0 over East Timor’s senior team). The Olyroos probably couldn’t do that as the SEA leagues are more on par with the ALM. It would be perfect for capping guys like Antonio Arena and James Overy though who are easily among the hottest prospects in ASEAN, and it could also be good for lesser known faces like Luka Didulica and Gianluca Okon.