I prefer petite females over those with exaggerated busts, myself, but you do need to be careful with this. If any character in an NSFW game looks too young, you can get your game banned from Steam. Characters with youngish faces and figures are problematic... thus giving a character a larger bust helps to indicate she can't be all that young, no matter how youngish her face is. A petite succubi, however, especially one with a youngish face, could easily be construed as too young by the powers that be at Steam, and in that case they will ban your game. I've heard that once they ban a game, there's almost no chance of it being allowed back on, no matter what the dev does to bring it into compliance. Other devs have already run into this issue. Don't let it be your downfall. If you want to have a petite succubi (I'd like to see it), be careful to have some feature about her that indicates she's definitely not a minor. Also, I don't believe it's enough to simply state in the text that the character is 18 or older; I think the artwork must speak for itself. Just be careful.