All righty then! This might be a little bit toooooo much! But listen!
Velen states that Elune might be a Naaru right? We aaaaaaaall know that Blizzard doesn't make such theories out of thin air... and that in the end... it turns out it's partially true or, totally true! But wait there is more!
It is stated in WoW RPG and other sources that she was capable of creating Ancients (Aviana for instance)
According to Lorewalker Cho:
Shao Hao purgred his doubts in the jade forest (jade serpent statue appears)
In Krasarang he overcame Despair (the statue of red crane appears)
Fear in Townlong Stepes (Ox statue)
And anger, hatred, violence in Kun-Lai (Xuen statue appears)
In the end there is something metioned about him becoming a pure being... of pure light (pretty much as the Naaru)
My theory is that:
-August Celestials are probably Ancients of Pandaria created by Shao-Hao (pretty much like Elune created Aviana). Both of Hyjal and pandarian Ancients share some common features (spiritually immortal) though Pandarian ones are not connected to the Emerald Dream (due to Shaohao not having any kind of acquaintance with Ysera)
-Shao Hao becoming Naaru after he entered the Valley of Eternal Blossom (just like Cho states "creature of pure light:. I wouldn't be suprised if we gonna see some Sha'o or some simillar Naaru in the future with apostrophe in the middle of the name.
-Velen stating that E'lune has Naaru features (maybee at one point in time she turned into one aswell? being all good, worthy etc.)
In Krasarang Wilds both Alliance and Horde players have to accompany Tauren/NightElves in their journey to place (which we! players know as Valley of Eternal Blossom) The Tauren female on the Horde side had the vision... To move straight away to Pandaria... On the Nelf side there was also some dude or chick with vision telling them to come to Panda-land.
Both Nelfs and Taurens are connected "somehow" to Elune... And the Valley itself is connected to Shao-Hao... It might be a pure speculation but it kinda looks like, the one sending both races there was The Moon Godess herself, just to learn the teachings of other superior being (Shao Hao)...
Naaru are fighting against the Burning Legion right? This creates a perfect plot for Anduin (under the protection of Dezco) to become the leader (from Velen's vision) which will lead the armies of the light.
This ofc leads us to conclusion that it was all planned by the Naaru...
Dunno... I'm bad at this kind of things...
But you atleast have to admit that (the whole Valley of Eternal Blossom thing is kinda strange) since we still don't know why both Tauren and Night Elves appeared there on the first place...