Mumei and Fauna

Inspired by the old Summer event in FGO with the pig civilization, the legend of Paris being forced to choose between 3 Goddesses, and the basic conflict between civilization and nature

Your Patrons are as mysterious as ever. Something about the secrets of the universe being too much for your mortal mind. As far as you can tell, they just can’t be bothered to explain. It seems there's a dispute over how to develop this island into a private resort and their friends know better than to take sides. Each sees merits in the other’s positions but neither will budge, so they chose an outside arbiter. You. Fauna: Konfauna, you. Mumei: Good morning Hooman. Now, what to build?