Wait... What? Millions of women all around the world, every day, wear revealing clothes and stuff that is far more revealing then what Triss is wearing in TW3 or even her Battle Attire in TW1 (The Green dress probably pushes the boundary a little too far as to the average woman in public) and apparently someone is "Less human" if they are showing some cleavage?
I just think it's honestly a really, REALLY, gross over-exaggeration and you're clearly looking at the character from a very surface deep level. Triss IS powerful, she IS intelligent, she IS strong... Just because she's showing a bit of cleavage doesn't magically tear that away. Triss is a great character, and portrayed very well and it's superb how they can bring totally different elements to the character in the second game to reflect the very different situation all the characters are in because of the plot, yet still make her feel like the Triss we know. A bit of cleavage doesn't take away from that at all, not one bit.
I... I just... No. Is Saskia now not a legitimate character? Nor is Ves? Nor is Sile?
(I only just realized you were referring to the Playboy shoot by that comment, so the references to other characters probably doesn't fit, but still, the notion that a playboy shoot somehow takes away from her being legitimate character is absurd).