It hard to not talk about Mizora in relation to Wyll since so much of his story is tied to her, the two are even forced to share a page in the Art book. I honestly agree that Mizora is the weak point in Wyll's story, possibly due to the re-write. Replaying the game it honestly feels like the story is struggling to come up with reasons to keep her around for as long as they do. Nothing she does really comes off as threatening, nor does her scheming make much sense. She's not even good at bargaining, the more I think about it, as she folds at the slightest bit of pushback and then just proceeds to make shit up anyways.
That's why I suggested before that if they should've either merged her character with Raphael, or tied it into that particular subplot(Mizora needs Wyll to suss out and foil whatever it is Raphael is planning because Zariel yada-yada. Or Wyll is there to lead the player character to his boss so that they can retrieve the crown.)
I wonder if Wyll being chill is a question of personal perception or party combination. I can't have Wyll in my party for long because he seems so eager to offend everyone and has nothing substantial to say, while I find Gale and Lae'zel to be really wholesome together because they have nice, interesting conversations with each other.
As for Maryzora - I really like her little jacket. Even if I am not sure, I want to know who's hair the pelt collar used to be. I don't need the spice, I might take fashion advice.
Wyll flirting with Lae'zel gives just as much insight into the two of the characters personalities as Gale and Lae'zel conversing with one another. One shows that Lae'zel doesn't understand the concept of romance/love(something she eventually comes to find she actually enjoys when you romance her yourself at the end of her Act 3 scene) and that Wyll is a romantic by nature. Just because he strikes out doesn't mean those conversations aren't substantial to either characters. Or well, it use to be, they've removed it since then which is a shame, because it was funny moment between the two, but I guess a lot of people complained about it in feedback.
It's honestly annoying how the only thing Larian seems to listen to when it comes to Wyll character is what to remove, instead of build off of when it comes to his feedback.
I think I would have liked it if Gortash was Wyll's brother. If both brothers had been seduced by devilish influences, and while Wyll rebelled against the dark nature, Gortash welcomed it.
Suddenly, Gortash is removing his father and taking over Baldur's Gate while his brother is away playing hero. Then Wyll's return makes it all more personal.
It also adds an element to the connection between Wyll and Karlach. If she once had a thing for Wyll's brother, but learned over to favor Wyll instead.
Wyll definitely needs more "friends" outside of his shitty dad, and dad shitty friends to interact with in the city. It still feels like a miss opportunity that those two don't know each other. Just like it feels like a weird writing choice that he, a city native who was growing up to become a politician, doesn't know who Cazador, but Gale, who doesn't even live in the city, does. Wyll has a lot of little writing choices in his story.