I thought the storyline was wonderful and became very invested in the world, the science, the alien race, the characters, the changed culture, and so on. It was a fun idea and a well-thought-out world. The story is filled with some cool elements and great one-liners.
There is a perfect array of characters and I love that it was set in Australia. Not nearly enough fiction is set in this country, even though it makes such a fantastic setting!
I am especially impressed with the way you created multiple “bad guys” with varying personalities, agendas, and threat levels.