Ethical questions aside, as far as I know there will not be children in the game.
And at least for the foreseeable future there won't be any sub-human, trans-humans or human-alien hybrids.

I have no idea where you got this information Kelfka. Children will be VERY unlikely and I disagree with having them included personally speaking as well.
But the canon already has well-established xeno-humans, spliced humans, augmented humans, Transanimals, and their less intelligent cousins: the Optianimals.
Hygiene has been an on-going discussion Volt and while a lot of us would like to see it eventually, it will be unlikely to arrive in the game for quite some time. There's a lot to get done and everyone has different priorities for what content they want added to the game, Tynan's getting around to ensuring he has a fun, functioning Pre-Alpha for the Kickstarter backers before adding anything too game-changing that will produce many bugs.