If people were that bloody offended by Adult content why the heck did it take 30% of the total vote?
Food for thought.
Clearly that's a rhetorical question. 
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I'm going to go out on a limb here and guess that some people aren't really sure about this topic, so allow me to reframe it just a tiny bit. Why titillate the player? Same reason you give them that +5 vorpal longsword: to reward them. Perhaps not the only reason, but it is one. There are also degrees here, and progression curves. You start out by giving them a +1 sword after an early success perhaps. Similarly, maybe advancing the story lets them meet a potential love interest the first time. That first meeting shouldn't be the fan service equivalent to that +5 vorpal longsword. Point is, there are plenty of people here who don't want to play Diablo in NWN, but who also recognize the value in the occasional fancy or flashy artifact. There's also value in hinting at and acknowledging various forms of adult content, as well as making use of it as a form of variety to break up the power fantasies. I'm going to stop now before I stretch this analogy past the breaking point.
Most of the suggestions I've thought of so far have been mentioned already, and I think a lot of them are pretty good.
Not quite "adult", but I'd love to see some new animations in the spirit of Ninjaweaselman's Romantic Animation Suite. The romantic one. Or some new dancing animations. I only know of like one or two.
