My two cents is when something is adapted well it will feel right. I don't think there's a right way, it can be quite divergent from the source material and it can be really damned faithful. I don't think there's no purpose in a faithful adaptation
The question is what "faithful" means, though. When people talk about "faithful" adaptations, they usually mean it in a very superficial way, exactly copying the letter of the text. But true fidelity is to the substance, the spirit of the work, not just its surface. The first two Harry Potter movies are the most slavishly faithful ones to the letter of the books, but they do the worst job at being faithful to their essence, to their sense of wonder and magic. If all you look at is the surface, you miss the heart of the work.
And sure, there's nothing intrinsically wrong with doing a faithful adaptation from time to time. What I object to is the lazy assumption that
every adaptation needs to be faithful. And it's particularly misguided here, because, as I've said, CB is jazz, and jazz is about freedom from strict forms. The fidelity should be to that spirit, to the characters, to the world. Everything else should be freely reworked and played around with.
and just going from animated to live action alone is going to be different.
Which is exactly why it's a bad idea to try to duplicate the visual style of animation or comics too closely in live action. That tends to look campy in a way that the original work didn't. What you want to do is find a way to convey the same sensibility using the visual tools and language of live action, instead of trying to copy how it was done with the language of animation. Fidelity should be to the goals, not just the methods.
I felt like Pineda's Faye in as a natural part of this series whereas some of the characters felt like they were dropped in out of a different show. Perhaps the decision to tone down her sexuality also allowed some flexibility with the character.
The thing about Faye in the show is that, when it comes to her dialogue and behavior, she isn't usually defined by her sexuality. She's not usually expressing herself or interacting with others in a sexual manner, but is more characterized as a bratty, cynical tough girl out to make money by any means she can, and angsty about not remembering her true identity or her past. She just happens to be scantily dressed and striking fanservicey poses while otherwise going about her non-sexual business. It's a surface veneer most of the time. She does occasionally seduce people to get what she wants, but it's a tool in her kit, a facade more than something that really defines her. We do see her genuinely attracted to various men from time to time, but it rarely works out well. Like in "Cowboy Funk" where she thinks Andy is cute and gets herself invited to his yacht, but quickly sours on him when she realizes he's shallow and self-obsessed. And even there, I think she was mainly trying to beat him to the bounty.
So maybe it's not really
Faye's sexuality that's been toned down, merely the degree to which her visual presentation to the audience is sexualized. I'd say those are two different things. Sexuality is not synonymous with sex appeal. A person's sexuality is about their own desires and feelings and relationships, about the role sex plays in their life and their view of themselves, not merely how they appear to others.