I found human Anankos rather likable. Sure, he sounds just like Cam Clarke Corrin, but it felt pleasant to hear this side of Anankos after experiencing the one from Revelation. I even felt bad for human Anankos by the second part. Owain/Odin had some really likable moments here, even more than Inigo/Laslow's IMO.
The first map took me two tries, as it mainly came down to RNG luck against Sumeragi. The first time I wasn't lucky, while the second run had a better luck. The second map took me three tries: one with RNG luck going against me against a Dark Knight, and the second try was just a test to see what would happen if you took the non-Dragon's Vein path. Long story short, do the Dragon's Vein path. Those Berserkers are just way too scary to deal with. With the third attempt, I did the full Dragon's Vein route, and it wasn't as bad I thought when I learned about the enemy swarm, particularly because all of your units get super-charged and the one that activated it gets added skills. In my run, it was Laslow, and he got some kills thanks to Astra. I even got some RNG luck against Arete and the Maids and managed to escape before the Kinshi Knights arrived.
As for the story points...
Damn, Lilith acted pretty scary for a villain, especially how she treats human Anankos, but I guess I have that impression because I'm used to seeing her as a kind girl. Human Anankos's death makes her realize that the Dragon Anankos never loved her as a parent, and the human one tries to reach out in the final moments. She learns of her father's son's/daughter's name, and so she decides to travel to Nohr and be with Corrin to make up for it, although she will never reveal that she is Corrin's sister. Yes, turns out Corrin's real little sister is Lilith. Older sister or little sister? We don't know, but I'm leaning towards the latter.
I kind of wish we got to see Anankos without the hood though. There was a moment when he was dying where you could see what was underneath his hood, but it looked like even his hair covers his eyes.
And quite shockingly, human Anankos ends up returning to dragon Anankos. The DLC ends with one scene showing Dragon Anankos talking about how he will destroy humanity and laughs menacingly, and then the credits play. After that, we see Dragon Anankos again, but this time, he speaks in that weird caps-and-lowercase language like Monster Garon did in Conquest, but this time, it's a plea for Corrin, Laslow, Selena, and Odin to defeat him and free him from his madness, ending with the Dragon Anankos gaining composure for a brief second as he says, "I believe in you." It then transitions to a special narration text talking about how you will never learn Anankos is your father and Lilith is your sister during your adventure.
I also find it funny that Odin, Laslow, and Selena were supposed to go to Hoshido originally. Just imagine how different they would've looked like if they adapted to Hoshidan culture! They end up in Nohr only because Corrin turns out to be there. Not only that, but those three knew about Valla before Corrin learned about it first hand. Imagine how the three felt during the Revelation playthrough in the later chapters.
With the first one, I liked how they referenced Robin at the end of it when Human Anankos talked about feeling the presence of a "tactician."
Still a shame that when you get First Blood for your main adventure, it's probably going to be pointless because you've probably already beaten the game at that point and thus you no longer have to worry about Dragon's Vein tiles, especially when the way this DLC is set up is so that you would play it after beating Revelation.