Sorry, Hellegennes, I must have accidentally skipped your response.
If you don't believe in spiritual things, gods and the rest of it, everything is a body thing.
To believe is to trust something even without evidence.
What is spirituality? Our body is an extremely complex "machine". Our brain evolved in such a way that we developed higher cognition and elaboration capabilities than most other creatures. We question our surrounding and when we don't understand how the laws of the Universe work we make up stories to explain them or just fantasize about them. We wonder about death a lot; of course: it's such an important and unknown part of our life! That's when spirituality chimes in.
Back in the day it was religion and stories about religion. Today it's religion and science fiction.
That's the way I look at it. I love all these stories. That's why I also love TLJ.
If you don't believe in spiritual things, gods and the rest of it, everything is a body thing.
If you don't believe in spiritual things, gods and the rest of it, everything is a body thing. So the question if sexuality is a body or a mind thing doesn't have any meaning in this context. What I was referring to, on the other hand, when I spoke about sexuality permeating the way of thinking and acting was the fact that sexuality is a character trait, not just a bodily function. And it's not just societal attitudes that play a part in this, it's sexuality itself which plays a role in how you think, i.e. sexuality determines at least part of your way of thinking, apart from other people's attitudes towards you. It is perhaps instrumental in shaping a person's personality.

I'd think that if (and I stress the if) the reincarnated person will remember his/her previous life, I'd think he/she would in fact transcend gender and sexual orientation.
So, if you have a universe where spiritual things exist and character traits are not just chemical reactions in the brain, then sexuality would be transferable (in a reincarnation) as much as personality.

Regarding April and Saga, your explanation is a cool theory. However we do know that April was reborn and the way the story is presented it seems like Saga was born at the same time April was reborn. Maybe we were falsely led to believe this and it's just a storytelling trick, but right now the evidence points toward Saga being a continuation of April rather than Saga given birth to April's story.
Yeah it could be a big "ooooo you think April's gonna be reborn, but you're wrooong!" hehehehe
Tell you the truth....I've already stated it elsewhere. I would have preferred April just stay dead. Mind you she's my favorite character of all the saga.
...But I guess I'm just too worried if she's brought back she won't be the merry April from TLJ or the conflicted April from Dreamfall TLJ and she would be a character I won't like....I hope if she comes back (knowing she is/was April) it won't be a letdown.