I write menages (as anyone who has even once been by this blog knows!) but recently wondered about writing an equally hot couple story. I like my historical menage series, like the taboo of them as everyone has to hide it from society. But an equally hot couple story-m/f I mean, might work.
Of course there's also the m/m and f/f stories, because they were also forbidden historically. Not only shunned, but homosexual men could be hanged. It was dangerous expressing your sexuality, but the rewards were worth it.
Things to ponder.