SE has done nothing in the past 8 years to inspire any sort of confidence in their ability to write mature, well-developed characters that act with a consistent logic.
I liked XIII, and what I've seen of XIV is pretty cool. And Type-0 looks pretty awesome too. XV looks neat so far, even though we don't know a lot about the story. The Last Remnant was cool.
And story will only be one part of the game. There's still battle systems, art design and soundtrack. I'm definitely interested.
And explicitly mentioning sex feels like a weird gambit on their part. FF always has super-revealing costumes, or a literal sex-bunny race, but nothing resembling sex between characters.
Yes, you're right. It's something new. I can understand the initial surprise in it being included since it's something new.
But after that, I don't get the complaints unless people only want neutered, sex-less relationships to be a concrete rule for the entire series for all time. I think the way they're tying it into the story is pretty interesting, personally. It's not just a random sex mini-game or something. It's somebody holding on to dead loved one that just got blown up in front of them. I mean, that's pretty dark, and from the sound of it she's cold and acts like its taking a heavy toll on her in the story. Furthermore, I think I read that Tidus can't know he's dead or else he vanishes - so she's basically having to lie to him the whole time, which creates more burden for her. Almost resembles the core themes of Frankenstein. I'd like to see where they go with it before I condemn something I haven't read ... let alone the following game that we haven't seen anything of yet.