So what might we be seeing in v5.1 and beyond?

Despite my having brought up the Yoruba, Candomble, Aztec and Hawaiian mythologies in my earlier predictions, I don't agree with miHoYo's decision to base Natlan on all of these cultures. My predictions were still founded on a Natlan based on the Yoruba but with information taken from Native American cultures if there wasn't enough from just the Yoruba alone.
Act I was a tour around Natlan. Act II would be when we'd first meet with the Archon. The Fatui would appear but we wouldn't learn much about their operations.
My Mavuika is the Pyro Yaksha turned Archon prediction may still work despite what was said in the quest.
Mavuika's Archon hair is unique compared to even Neuvillette. Her hair lights on fire and lifts up. This is reminiscent of the Pyro Yaksha's hair.
Kachina tells us Natlan Archons live a normal human lifetime and age. That didn't happen to Ei the only other human Archon we have.
Mavuika's power seems to come from the Sacred Flame and not the Gnosis. This Sacred Flame acts similarly to the Akasha System in Sumeru in that it powers the Archon with humanity.
The Statue of the Seven poses a dilemma. The only way for it to look like Mavuika is if she was the first Pyro Archon.
Today's Mavuika might be the purest form of the Pyro Yaksha Mavuika and through her can Natlan achieve the same victory over fate as Inazuma, Sumeru and Fontaine.
Memory manipulation has started to become important in the game's narrative and that holds true for Natlan. Mavuika might have altered memories to create the narrative that she's human.
The Abyss attack on Natlan isn't from the Cataclysm at all. It's actually the Abyssal corruption due to Nibelung's reliance on it during the early phase of the Archon War, the part where the Dragon Sovereigns were defeated by Phanes.
We may learn of all of this through her Character Quest which should happen in v5.2 and this is why v5.3 is where the Archon Quest ends this time.
They real world lore of the Wayob, Python King, Ochkan, Ochkanatlan and Waxaklahun Ubah Kan can all be woven together to suggest the Pyro Dragon worked with Istaroth to set up a plan using Mavuika to defy fate and repel both the Abyss and even Celestia.
The Aztec creation myth about the Five Suns may be how this Archon Quest will progress with Act II's ending starting off the ritual of the New Fire Ceremony.
Xbalanque killing Xiuhcoatl, Yupanqui killing Och-Kan and Chaac also killing a dragon might all be part of the same legend, killing the Pyro Dragon and lighting the first Sacred Flame to both create the first human Pyro Archon and the first Wayob.
That Wayob is the Pyro Dragon.
On the other side, the Aztec myths of the Five Suns and New Fire Ceremony are the Pilgrimage, Night Warden Wars and what will ultimately save Natlan at the end of the Archon Quest.
The plan started with the Pyro Yaksha becoming the First Pyro Archon but setting the stage for Xbalanque to kill the Pyro Dragon and become the first human Pyro Archon who then started the tradition of the Pilgrimage and Night Warden Wars. In the meantime Chaac revived the dragon as the Wayob and created the Sacred Flame. Ultimately the heroes of Natlan across the ages will come together and burn away the Abyss.
Mavuika entered the Sacred Flame in order to return every so often in order to make sure these traditions are still being carried out. This reflects the Aztec Sun God Nanahuatzin.
The dragon's sacrifice and becoming the Wayob mirrors Makoto's sacrifice to become the Sacred Sakura. Both strengthen their region's weakened Ley Lines.
We can't get our Pyro Traveler yet because Mavuika refuses to accept the role of Archon out of shame and the Pyro Dragon is dead.
The Traveler not being affected by the Abyss and having the ability to purify it reinforces the qualities of the Descenders. Paimon not being affected may reinforce my theory that she's a shining shade. (another one not Istaroth)
miHoYo uses the principles of quantum mechanics often and Mavuika's belief that all time is happening concurrently is part of it. It's also the deterministic approach to it but multiverses are actually indeterministic and likely the revelation Genshin's story is set to end on.
Iansan is the MVP on the human side of this plan. Her tribe may be called Tonatiuh in relation to Huitzilopochtli and Nanahuatzin.
The Masters of the Night-Wind are Yayauhco because Night Wind is another name for Tezcatilipoca and that's his layer of heaven.
The Flower-Feather Clan might be Xoxoauhco or the dawn sky which is also the abode of Huitzilopochtli. They might live in an area called Xochiquetzal, the goddess of flowers, feathers and beauty.
Capitano seemed to be talking to Ororon at the end but that his lines seem split between two conversation partners makes me think the last line was directed at Sandrone the true mastermind behind the Fatui's operations in Natlan.
Did Mare Jivari exist 1000 years ago, 500 years ago or less? Tenoch died in Mare Jivari but lived 500 years ago but the Wanderer's Troupe visited it and they lived 1000 years ago....
What was Capitano doing since 2022 since that's when he went to Natlan?
And are the Fatui bad again? Didn't Arlecchino tell us not to focus on sides? We were becoming cordial with the Fatui because of her and Childe last time. Now we're back to the Fatui are evil again?
The writing in Genshin has been declining. Genshin hasn't been making as much money as it used to. Could it be downsizing? Could the better writers have quit the company?

Whew! Yeah I wasn't counting on writing this much for just Act I and II but I suppose much of that had to do with needing to familiarize you guys with much more esoteric Native American and African mythology compared to the well known Japanese and European ones. Hope you guys made it through in one piece!