Thoughts on the new Targon lore
Here's just a bit of feedback based on my impressions of the new Mount Targon lore:
Pantheon
Atreus is a bit of a prick, isn't he? Dobbed Leona in for letting the golden being go and tried to kill her, after she joined the Ra-Horak he decided she was being a pussy about dealing with the raiders, which was his motivation for going up the mountain, and the story's ambiguous about whether or not he has a point.
Ultimately the entire story is pretty pointless, isn't it? Pantheon isn't Atreus, unlike Leona and Diana there's no trace of his personality left. His body is just a flesh-puppet that Pantheon is using to fight- the point is made that he's not the first Pantheon and he won't be the last. The entire lore basically boils down to "There was this fierce Rakkor warrior boy who climbed the mountain and died. Then Pantheon came down to kick ass."
Even within the story, the entire deal with the first raider attack where everyone except Atreus and Pylas died in was pointless- Atreus tried to sacrifice himself to let Pylas get away and warn their village, but the sacrifice was pointless (Pylas didn't escape), but that's OK because nothing came of it anyway (Atreus survived, Pylas survived, and the raiders decided not to attack their village anyway).
Leona
Well that torpedoes any relationship between her and either Pantheon OR Diana. Her only connection to Pantheon is that Atreus tried to kill her when they were young, and her only relationship to Diana before the massacre of the elders is that Diana was a troublemaker that Leona was apparently aware of.
The ambiguous ending about her needing to "find" Diana suggests that Leona had a similar revelation that Diana was actually right all along, but doesn't go into any details. As a result, we don't really understand Leona's motivations at all.
Diana
Before, Leona was the paragon and Diana the renegade. Now it's pretty blatant that, her little temper-tantrum aside (which she actually feels bad for, and which was frankly justified since the elders were going to execute her) Diana is the one completely in the right, promoting unity between Solari and Lunari, and Leona is the misguided one. This doesn't really gel with her in-game quotes, though, which still portray her as a fanatical sun-hater.
The circumstances under which she found her first revelation are incredibly contrived- she's sweeping the library at night and sees a half-burned manuscript glittering from behind a sagging bookcase? What, did the Lunari carve their sacred texts on sheets of silver or something instead of paper? Did the Solari who was burning the Lunari books get bored half way and just decide to stuff it behind a bookcase instead of burning it completely? It'd be less contrived if the text was deliberately hidden by the last Lunari and she found its secret hiding place, rather than just stumbling across it like it'd blown under the couch.
Diana still has absolutely no connection whatsoever to Pantheon.