Yeah, I tend to euphemize my swearing. Let see, how I can put this... the draws of these comics are obviously predicated on the themes they all share and feature--i.e. the incest. Whether it started with Amanda, Liam, and Alexa in Satisfying Needs, then Lana and Daniel in Immoral Desires, and then Sarah, David, and uncle Peter in V.I.P.: Madness Together, the appeal at least in part other than their character designs and the sex itself, is the notion that they're relatives. If I just wanted to watch busty women with big asses have sex with random men, I would watch pornography which has better detail, 3D depth, and animation. (I know I tend to take shots at pornography, but it's not that I hate it especially if you're aware of my habits on planetsuzy.) Considering that these works are narrative driven, it provides a different experience than pornography does (one which pornography hasn't done since the 80's to early 90's, and outside of Japanese adult videos.) I would imagine for many, this isn't pornography; it's a fantasy. And they are vicariously living out each sexually explicit encounter through the main male character, assuming of course that the audience for this content is predominantly male. So then the question becomes, why would one want to see the main male character's mother or aunt have sex with random characters? Especially if the draw is the incest? I've seen many artists try to have their cake and eat it, too, in that they seek to take advantage of and monetize incest's popularity in 3D, while also trying to introduce their polyamorous and debaucherous fetishes which they've probably adopted from an over-exposure to modern pornography.
I don't want to see Lana have sex just to have sex, which is what a sexual encounter with either Liam, David, or even uncle Peter would be. Just as easily, even though Daniel is easily my favorite among Daval's male characters, I don't want to see Daniel have sex with Amanda, Alexa, or even Sarah, because that would be a giant "fudge you" to all his conveyed motivations I spent 10 chapters reading. Casual sex to me is just an enhanced form of masturbation, which I guess is okay for some. But casual sex for me trivializes the relationship, which in turn trivializes the fantasy. Because the fantasy lies in their close relationships. Lana's appeal isn't simply in her character design; it's in the notion that she's Daniel's mother; it's in the notion that she's a rather modest and "moral" individual; it's in the notion that she's being "broken in" particularly by her son. It's the same for the other works as well. And I would assume these are the prevalent sentiments among the fan base especially in their fervor to keep Daniel and Lana's relationship virtually exclusive (I would imagine Sofia would have joined in by the end of Chapter Six of Immoral Desires if the fanbase wasn't so against it.) And while I like the idea of crossovers among a single artist's collected works, "crossover sex" no es bueno para mi, hermano.