One of my most anticipated fixes! Martian androids, here we come!
I've always theory-crafted a game in which I play several player-race companies of millions with a huge neutral population of billions, with each company specializing in different technologies. Now, the bio-company will be far more important - having a team dedicated solely to the best possible androids for colonization, and then selling the proprietary rights to the new genetic material (in the form of colonists), could be very lucrative. Lower oxygen rates, lower temperatures, and lower gravity would make most colonization efforts far quicker and less terraformer-intensive.