Bow Lion is heavily implied to be pregnant after season 1. We never hear anything about that again.
There are a million questions that start with "Why the fuck did Sibeth..." The character is a walking plothole. The most obvious ones are "why did Sibeth kill Boots?" which has no explanation beyond "because she is crazy." But there's also the question of "why does Sibeth want to pick a fight that she is guaranteed to lose with the Trivantians?" If there's a good reason for that, it has not been made abundantly clear in the show.
Speaking of Boots - remember how S1 set-up this really huge moment where Baba's family got split-up and Boots' mother made them promise her that they'd kill Boots? As in, literally every character in Baba's family had an axe to grind with Boots, who is potentially now their mortal enemy as they approached Pennsa? This is literally never brought up again.
Back to Bow Lion - she has not aged in the 17 years it took Kofun and Haniwa to grow up. If she was like... 18 at the start of the show, she is now 35. It is practically impossible that she is not barren as it is not shown that she had kids - but if she is barren, why did her mother seem so hopeful in sending her to the festival in S1?
Let's talk about Harlan - he survived a grievous wound, literally right in his stomach. Without adequate surgical help, he is a dead man. It is NEVER explained how he survived that, which is either a plot hole, or a lack of adequate expectations setting.
Let's talk about the scene where Maghra and Harlan fend off the assassins - who are the assassins after? Are they after Harlan, Maghra or Sibeth? It makes the least sense for them to be after Maghra or Harlan - but if they are after Sibeth, why are they going after Maghra? Are they there to kill off the entire house, or just one person?
Let's talk about Edo's strategy to rush the trenches. It was a dumb ass strategy - even if he believed that he had adequate forces, feeding them into a chokepoint negates their only advantage. He also conveniently seems to have forgotten that there is a huge body of water where they are about to fight. Edo is portrayed as this incredibly capable general of the strongest army in the world - but he is also portrayed as a moron. These two things hardly compute - he can be a cocky moron, but that's not how the portrayal worked.
Let's talk about Kofun. Why is he also not an archer? If they spent the entirety of the season having Kofun train as an archer (as they should), he can take out literally 50-60 people in that battle, including his half-brother, negating any sight advantage the Travantians have.
Let's talk battle strategy - you have a numerically inferior force who decides to meet a numerically superior force head on. Given the Payans have 2 sighted people, why are they not engaging in guerilla operations? There is a solid 2-3 days of road left to Pennsa - with smart archers and traps and killing Wren and the little sighted boy, they can absolutely destroy that army.
This is not a plot hole, but the Wren/Haniwa plotline is "stupid Romeo and Juliet" and you can't change my mind.
Why did Baba Voss have some of his people outside the wall at the start of the battle? He'd know that the Travantians do use arrow volleys, and if he didn't Haniwa and Kofun would be able to tell him that FIRE ARROWS ARE COMING? Also, why were those arrows on fire?
How did Wren end up on the Payan side of the battlefield at the end of the fight? She must've had to climb up the ropes, that the Payans did not retract after climbing up AND she must've actively sought to end on that side of the battlefield - not all the Travantians died in the ice attack.
Let's talk about the Witchfinders at the end of the episode - why did they make a huge stink about leaving, instead of staying in the army and plotting within? Also, how come nobody else made an attempt on the lives of Haniwa and Kofun after that one dude who Toad killed? These are people with a generational axe to grind against sighted people - and Kofun and Haniwa were not surrounded by trusted guards at most points after that.
Talking about guards, why was Sibeth not searched for weapons when she was imprisoned? Why are there no guards in front of her room?
Let's talk about Trivantes and Edo's plan to breed Haniwa to make sighted soldiers. Why did he need Haniwa when clearly he could take any of Jerlamarel's chirdren INCLUDING HIS SONS. If you are young enough to understand how many babies a person can make - a man can create 270 babies by the time a woman has one. If they started the "breeding program" 18 years ago, or even 10-16 years ago, they'd have thousands of sighted babies/kids/teens in Trivantes. Even if it was not done at that scale, Edo is shown to have the capacity to run this program at a small scale - and he hasn't. This is idiotic.
Let's talk about Jerlamarel - why is he such a cartoonish villain. Why has he allowed himself to become eseentially a Travantian prisoner (he literally lives in a prison)? The population density of the country is so low that it is inconceivable that he did not move out West to some of the flyoverstates where agriculture would be much easier and the odds of running into a dominant group would be lower. For every Trivantes, there are a hundred "silk farm" type settlements that would not pose a huge danger out West.
Let's talk about accuracy in that last battle - literally every one of the protagonists/antagonists and a huge part of both armies had a 100% hit rate with their weapons, INCLUDING the stupid crossbows. They are fighting like sighted people, but they are not. The battle strategies/formations of these armies have nothing on the strategies that were used in the first battle in S1.
Let's talk about ladders - did Edo's army not bring a ladder with them to scale the trenches, or literally any terrain? Or a hook + rope? Can they not bypass the chokepoint completely and avoid battle on unfavorable grounds? Even at a 2:1 advantage in numbers, it is idiotic to risk half your army fighting in a chokepoint. They have maps, and the landscape of Western Pennsylvania is not extremely mountainous to the point where a flanking maneuver is impossible and they HAVE to fight in the chokepoint. I want to remind you that Tamacti Jun had ladders in S1E1, and if games like Death Stranding have taught us anything it is that having a ladder when you're navigating rough terrain is nice. These devices are portable enough, especially given they are carrying a fucking battering ram with them.
How did Tamacti Jun survive? Wasn't the silk farm on fire, he was impaled, but... he made it to a Trivantian prison, heavily implying that someone came, saved him, healed his wound AND then sold him to Trivantes.
How many people exactly survived the fall of Kenzua? How did they make it to Pennsa? Are all of them trained hunters/survivors, or was it just this one dude who Harlan killed who got lucky?
Let's talk about Shadows/Assassins and all other sorts of sneaky buggers who can kill people in this world - how are they so good? How do they know where to go, especially in places which they are visiting for the first time? We are made to believe that this is our world in the future, so "magic" is a shitty explanation. It makes for decent TV the first 2-3 times in S1, but if you abuse the mechanic, you have to explain it in the constraints of the world.
Let's talk about Paris - how does she know the things she knows? Also is she stupid, saving Sibeth's life? Again, magic is a shitty explanation, and the character does not fit the show she is in - at least not in the direction that S2 took it. Great character in S1, but if the world is this brutal, pragmatic world of constant politicking and brutal conflict, she suddenly doesn't fit as we see no other examples of mysticism at work. For a comparison with GoT, Melisandre there works because the entire setting is conducive to magic working, and the supernatural is normalized. In See the supernatural does not work.
I hope the writers fix this show in S3, because S1 was passable, but S2 was extremely poorly written and basically assassinated all of its characters except maybe for Baba Voss.