Overall grade: B+
For both of Polynesia’s additions, we chose things that were emblematic of the entire pan-polynesian culture rather than for specific islands. The Marae and Vaka Nui are both depictions of cultural elements found on most or all island nations, unlike the Moai of Rapa Nui and the Maori warriors of Aotearoa. While the specific mechanics are a bit undercooked, I am happy with our choices from a thematic perspective, to such a degree that I think we outdid the base components in that regard. However, because we picked things that are Pan-Polynesian, that invariably meant the components all come early, and I am not too pleased with how the kit is fully unlocked by early classical.
Vaka Nui
Theme - S. Meaning “Big Ship” in a putative proto-polynesian language, the Vaka Nui represents the large catamarans used for colonization, migration, and trade throughout the Pacific.
Mechanics - B. The unit moves the ability to build fishing boats without expending a work boat from embarked melee units onto a unit with work boat AI and extends the ability to oil wells. This unit was drafted before the military unit improvement abilities were fixed, and represented my attempt to get Polynesia to actually use these abilities. There will be hurdles to making computer players use the Vaka Nui offensively, and not to over-produce them, but they still will be useful defensively.
Uniqueness - S. Unique fishing boat co-opted into a military support unit – a GAdmiral lite – is very unique.
Marae
Theme - S. The Marae, or Malae, are meeting places for Polynesian communities that are found in all extant cultures. They are the most consistent cultural institution, and are especially prominent in Maori culture where they formed the nucleus of anti-colonial and indigenous rights organizations.
Mechanics - D. They give a bonus on building completion. They come really early so there isn’t much wiggle-room for really expressive bonuses unless they cut into the UA.
Uniqueness – C. The yields are a strong early game boost but fade into the background quite quickly. There are no other unique councils at least.
Production Cost
CS
Movement
Science and +1 
Culture
Citizen Birth
Gold, and 
Food Whenever a Building is Constructed in City, scaling with Era
