But can we not come up with excuses for her clothing, so she just happened to be half-naked because absolutely nothing could have fit the story of a two-minute trailer?
First off, thank you for the kind words.
Now to answer your question.
If Cyberpunk 2077 is to be the heritage of Cyberpunk 2020, I am hard pressed to form a better character for the sake of that situation. The cyborg you're looking at there is the in one place, the microcosm of the entire world, of all that it is and all that is wrong with it. And all that could potentially go wrong.
All that
will go wrong.
It is in part because 'she' appears the way 'she' appears that her presence has weight. I will not refute that it takes advantage of certain marketing tendencies, but at the same time, I disagree that said tendencies were the purpose at hand, which I believe is the root of the problem here.
Was 'she' animated dressed like that because sex sells? Or was 'she' animated dressed like that because that is what goes with the very essence of the world that Cyberpunk is?
Take a good look at the rest of the teaser. 14 people dead, 4 injured. 'Her' body is highly attractive, and almost entirely artificial, with two thoroughly lethal blades installed in the arms.
The trailer directly implies 'her' responsibility in the act. (note that it's stated 'suspect' and that the responsibility is only implied, never directly confirmed, which I find odd, but then again... that's sort of irrelevant to this discussion)
One of the first things you learn of the Cyberpunk setting is that it emphasizes Style over Substance. The entire crux of this goes straight back at that, screaming at you.
The glamor, attractiveness, beauty of the surface hides the ugly monster beneath. Heck, did you pay attention to the lyrics of the song? It wasn't picked at random, ya know.