Honestly my stance is that Bioware should do what they feel is appropriate with the title.
I think in a game like TW2, nudity is appropriate, because that game has a very specific approach and style. That game spares no detail throughout the entire narrative. It makes sense to show nudity and graphic sex scenes because the game doesn't hold anything back in other areas. It wouldn't make sense to censor that.
Dragon age has a very different narrative style. It's a dark fantasy universe, with story lines exploring mature themes like sex, torture, rape, and racism. However, most of these themes are rarely shown on screen, or if they are, only partially. You don't see a character get raped, but you can infer that at some point off-screen the character had been raped, and that is part of that narrative. In TW2, you can watch someone get their eyes gauged out on screen, in Dragon Age, you meet a character in a dungeon and you can infer that they had been tortured. Therefore, I believe it's been within Dragon Age's narrative style to censor sex scenes and nudity in the last 2 games.
However, I don't know what they will be doing with Dragon Age 3. I won't say that they should include nudity. If Dragon Age 3's narrative is presented similarly to the last 2 games, then I think they shouldn't. If they decide the game overall will be more graphic and will express more detail and focus more on mature themes throughout the game, then I think it would be odd not to include nudity and more mature sex scenes than DA2.
I do not think nudity should be included just for the sake of having nudity. That's what TW1 did and I was unimpressed with the results. My point is, this is an issue that only the devs and writers posess enough context to judge properly, and therefore, I shall trust their judgement either way.