Re: What would a half-Andorian, half-Vulcan child look like?
Indeed. There is more drama and conflict in exploring the role of a hybrid in society than that of a character of a single planetary origin. And Star Trek is a drama first and foremost.
The boring one, the one with Khan, the one where Spock returns, the one with whales, the dumb one, the last one, the one with Kirk, the one with the Borg, the stupid one, the bad one, the new one, the other one with Khan.