Interesting proposals that remind me of the Docklands Development Corporation in London.
Your NeoCities should also be EcoLivable cities too, since cities generate about 70% of all global greenhouse gas emissions.
Green New Deal host country strategies and Green Bonds would then be available for seed capital, also boosting the value and lifestyle attractiveness of the entire phase-life of the city development.
More here in my Op-Ed in Hong Kong:
The design science behind our position:
As shared on TED:

Architect+Designer, Complexity geometer, Sustainability advocate, TEDx speaker, Asynsis principle: More for Less, Form follows Flow

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