A common speculation (or perhaps hope) I have seen on the forums is that the aumaua race will be inspired by the varying Polynesian cultures of the Pacific. This is likely because they're a coastal/islander people and "aumaua" sort of sounds like Maoi and Maori.
Personally I'd be strongly in favour of this being an influence. The cultures of Polynesia are rich and something that have virtually been left untouched by most fantasy settings so any inspiration taken from them would likely be something fresh.
To add a topic of discussion to the thread, would you want the aumaua to be inspired by Polynesian cultures? If not what type of cultural inspiration would you like to see?