Well you can have "realistic" (fully naked) characters doing bath, but there are a lot of ways to not show anything "too hot". In Loren 2 for example we'll use some cleverly object positioned in a way to cover a guy genitals, and so on
I don't post often, but I thought this was an interesting topic so I thought I might as well add my two cents. I don't see anything wrong with adding nudity to games so long as it's relatively tasteful which from what I've read here seems to be the general consensus. I also don't see anything wrong with both male and female nudity being included. Granted, I only ever play f/f romance, but just because it's not something, I'm personally into doesn't mean I don't think it's something that should not be included.
Way late reply to this thread but I will chime in.
First I will go on record saying AC rarely bothers me. Senran Kagura is one of my favorite game series to come out in a while.
I would have to say much of it depends on the purpose of adding it in. If it is essential to the story I am all for it. If it's to titillate the viewer I am fine with it. If it's to help someone get a cheap thrill I will pass on it. I don't think adding any more than the Loren level will really help much on sales. You mentioned above the uncensor patch and I can state with confidence it worked well with the Sunrider series.
If you do go the route for more explicit content I advise 3 levels of self censorship. The two you already have.. and the new one for the whole package. (no pun intended)