I've stayed only in Tahiti, so my opinions on the others are pure assumptions.
Aotearoa - the only plus I can think of is it's relatively close to the Great Ceremonial House. The minuses are many: it's pretty far set back from the lagoon, and because of Tuvalu and Fiji you have a sort-of tunnel vision view of the Castle (the definition of Theme Park View is an unobstructed view of the Castle); the only path to and from the Luau goes right by the frint of the building, so I would imagine that would increase the noise and decrease the privacy; the second floor rooms don't have balconies.
Tuvalu - the main minus is that the second floor rooms don't have balconies; the next thing can be a plus or a minus, depending on your opinion: it's just about right on the water, so there's no beach in front of it.
Tahiti - the only minus in my opinion is that it's pretty far from the Great Ceremonial House. The pluses are many, to me: the rooms are about 30 square feet larger than the other two buildings' rooms; there are 2 bathroom sinks, and the other 2 have only 1 sink per bathroom; it is a very short walk to the TTC, which means easy access to a direct monorail to Epcot, plus to the TTC buses to Animal Kingdom and Hollywood Studios (about the same distance as to the Poly bus stop); panoramic view of the lagoon, MK, the other 2 monorail resorts, the TTC ferry dock, and so on.