What's the point with that quite lackluster story in Endwalker?

[BrokentoothMarch]

Uh, do your best to not do this if you are a writer! It's okay if your character isn't traditionally "likable" as long as they are interesting! Let the character play out organically, authentic to both themselves and how the other characters would react to them! Embrace Venat for the very strange and very ruthless person that she is!

This is especially important. Sometimes we disassociate from the humanity of characters because they're, well, characters. They aren't real. However, they're meant to act as a construct that we can translate as real. The problem is that humans, like most animals, are pretty good at noticing when something isn't part of their species. The Uncanny Valley is a visual component to this, but writing has it's own version in character-building.

The point is that you're writing a person. People act in ways that can eventually be predicted, analyzed, and judged from. Many of our systems that apply to humans hinge off this fact. When there's a sudden veer in someone's personality or how they're perceived, most other people will be pretty quick to identify that to varying degrees of specificity (This especially applies to Hermes, in my opinion). That's what you don't want. What you want is to make someone consistent. People are consistent. Even in their inconsistency, they can be consistent ("Oh, Bob is always late!"). And not everyone will like that character because, well, not everyone likes everyone.

This is all without mentioning that in stories where it seems we're being forced to do something, the reader's/watcher's natural reaction is to often do the opposite. If Venat was the way she is, but the story played straight that she is a person of rather poor character who suspiciously always errs on the side of Might Makes Right despite her pleas of righteousness, I would have liked her far more. She'd still be an awful person, but she'd be a far better written character with those simple tweaks alone.