I finished up the prologue of Lost Stars yesterday, and there were a couple things I already wanted to comment.
First of all, I'm already enjoying it.
That's good to hear.
One thing I thought was kind of interesting was seeing how the average citizens of the galaxy feel about the Empire. I'm used to stories coming from the perspective of people who either in the Rebellion or are at least working against the empire, so it was interesting to see characters who happy the Empire has shown up, and to see how the Empire presents itself to people like that.

I also already know from the bits I've read online that either Thane or Ciena end up joining the Rebellion, so after seeing how pro-Empire they as kids, I'm very curious what ends up turning one of them against the Empire.
Do not read the back of the dust jacket then; it spoils that surprise (I knew going in and I wish I didn't.)