After making and seeing some posts on the Adult Film Database (which is where I heard about this place), I'd suggest there's a major unfilled niche, in adult videos, for hardcore porn with a serious and genuine level of intelligence (e.g., good dialogue, story lines about people actually falling in love, or doing the best they can under difficult situations, etc.). This line of work, if done properly, could create major crossover potential.
In all seriousness, there's real money to be made here, by the first person who figures out how to fill this particular niche, which is probably the single largest remaining unfilled niche in all of porn.
So, the question becomes, who should an industry outsider submit a 2-page (or shorter) treatment to, if the submitter is actually serious about getting it done?