You're right, you know. Although this game doesn't have black and white, good and evil, it does have more subtle roleplaying moral choices, such as like you said, not lying. There are many instances where one could have lied to "be kind' such as to help the female Scoia'tel agent in Act 1, but the game does not seem seem to reward this. I found the "rewards" in the incense quest a bit confusing, though.
First you get rewarded for being honest, but at the end of the quest, you kind of get punished for it. Possibly this is how real life works, so kudos to CDPR for not following formulaic archetypes and stereotypes too closely. This (not knowing if the game will reward or penalize you) kind of helps the player to do real roleplaying as opposed to just making a certain choice for the possible in-game rewards you might get for it.
I also liked that they did not stereotype humans/non-humans, and males/females too much. For instance, you get Cedric vs Iorveth as relative opposites, and the Scoia'tel vs the more peaceful non-humans. As far as female roles were concerned, (although there are a lot of women being sexual stereotypes) I really liked Saskia (Joan D'Arc, anyone?), and the variety of sorceresses (which of course are to a large extent borrowed from the Sapkowski books. )