That's Where You Get The Bad Guys For Your Story

This isn't just about bad guys.

A world where you can put your adult mind in a child's body is going to have a different kind of porn and kinks than our own.

If I was GM'ing, they'd be the creeper bad guys the players were trying to stop.

Let them decide if they're doing it for moral or legal reasons.

The Duncanites in Transhuman Space, particularly the Red faction would be where you'd go to participate or purchase such pornography and it's the obvious destination for someone looking to put a stop to it.

The sky is the limit on what kind of bot or bioroid you put a mind into.  Some places don't recognize you as a person anymore and there are varying degrees of rights a person who's moved their ghost has.

Furries are going to be actual furry creatures, not just suits.

But what's "fun" about talking about some of this technology are people who've already made a decision about their personal morality as if it was current rather than speculative tech.

Traveller, in the Interstellar Wars era, already has the medical technology for full, down to the genetic level, sex changes.  Gender dysphoria as a medical/psychological condition is fully treatable with a cure!  Multiple cures, actually.  The sex change makes the body match what the mind sees.  There's also stuff to make the mind see their body as it is.

There's folks who've made up their mind that one solution or the other is wrong and anyone seeking the wrong cure should be punished somehow.

In the game too.