I don't know if "care" is the right word or not, but there are definitely characters that begin to come to life. The artist captures a particular expression so well and so often, that you feel you can understand what that character is thinking and feeling.
The number one example of that for me is SaphireNishi's main character. In a few of her pictures, you can see such longing; in others, desire; and in yet others, lust. You start to feel like you know this girl, and the fact that most of those expressions are directed straight out the 4th wall, you even start to wonder for a split second if she's feeling those things for you.
Anyway, the recent "model" type stuff that SaphireNishi's been doing more of has left less room for what I consider to be the "real" Saph character, and I find that kind of sad. Going mainstream is probably important for the artist, and I want to see her rewarded for her hard work, but I'll also miss seeing the sexier, sassier, more intimate Saph as often.
Then again, maybe that's just me…