So an FYI for everyone, Poni Island will be the location of the final battle against the pouchers, their base will be located inside the deep Poni Grove after the area where the Kommo-o trial is and just before the Alter of Sun and Moon. There will be a hidden entrance, now it will be up to the GM and Co-Gm's when the entrance is found ether after the Final Battle against Lusimine/Mega Necrozma or before.