I do not see how this:

>if we were to alter the human physiology, what would it mean to even be human any more? We wouldn't be human, we would be some other animal.

is logically connected to this:

>What's the point of acting for 'good' if you are not free to make a choice between good and bad?

>We would be a species that deserves the title homo SAPIENS SAPIENS!

And our sworn enemies would be HOMO HOMOs!