There was some discussion about what works in science fiction at a con I went to a few weeks ago. The general view was white guy or generic guy from Earth as hero. That's what readers buy. May be so. Not having the sales I was hoping for on Bonded Agent, a female insurance adjuster from Mars. I guess people don't want to read about some insurance company.
But it's got lizard men! For god sake, it's got lizard men. And that's all I have to say.