Sorry for the delay, I've been busy doing other things. Australia will be coming very soon.
I think this is the first color scheme I've seen that went this in-depth with below-sea-level topo.
Some rather spontaneous ideas:Here's climate and biomes. I'm in need of ideas for fictional biomes to extend the list (for fantasy maps).
Melanesia and Polynesia are ethnocultural groupings first and foremost, that's why they're like that.Here's Melanesia, although I'm not sure what should be included in Melanesia: New Zealand is closer to Melanesia than Polynesia, while Fiji is closer to Tonga than Vanuatu and New Caledonia, so I personally think that New Zealand should be part of Melanesia and Fiji part of Polynesia, rather than the other way round that is usually used.