Human Advancement -The logical next step is cybernetics. We are well on our way with little ethical implications. As in AI integration or Bio-Netics. Forget the robots. People need to be the biological template for biomachine integration.
Another possibility which might have more ethical concerns would involve genetic manipulation. Rather than making humans to order in a tube; why not take genes from animals and splice them into humans? Ethical concerns aside it might be possible to enhance ourselves with animal genes. Or vice versa.
The point, is that Homo Sapiens haven’t changed much in our entire history so in order to progress we may have to take that into our own hands.