You are totally correct about your assumption that hard core gamers per se don't think kindly about nudity in the games they play. Many think that it is a distraction from the gameplay and character development. Therefore they are critical about moders who do so. These are also the same people who would not go to a nude beach and drop their shorts. For myself, I would appreciate both and have no problems with it.
Personally, I thing nudity and sexuality have a definite place in adult games since they are an escential element in our society. I say this because I believe it brings a sort of reality to a game. Or I should say, it can bring a sort of reality if it is done in the correct manner.
Take for instance, a game which has fairies and elves should show more imagination by depicting them more naked than clothed. Creatures of the woodland wouldn't run around clothed albeit they may have a spot or two with more hair. A game like ME 1&2 and soon to be 3, set in a distant future does not seem quite realistic in the fact that clothing seems to cover up everthing except for the little peaks here and there of midrifts and hips. I can't imagine a future with more clothing when looking back over the norms of our own society over the past century for less clothing rather than more. I don't remember any thongs at the beach years ago but they are fairly prevalent now. What will a couple of hundred years in the future bring?
The game manufacturers don't want to offend any segment of the society, game community (their worldwide audience target) or risk an X rating so you won't see them adding much choice to the attire. Frankly, you can see a lot more nudity and sexual activity on any comcast tv channel. So it's up to the modding community to come up with imaginative, art worthy, creative and entertaining mods for these games. With the progress of graphical design and inovation over the past years, I'm really looking forward to it. This gives some people an outlet for showing their genius and creativity.
Someone asked me why I played a female character in ME and I told them that I would rather cam chase an attractive female figure around for the next 15 hours rather than some guys butt. The move provocative the better.