I read through this and enjoyed it quite a bit. I found the author mixed some standard SciFi tropes with some creative ideas into a great setting for some adventures. They gave us a good amount of background information as well as plenty of organizational and location info. You could run games for quite some time in this setting if you so chose. I think it would also work well as a "home base" for a player character team.
I do wish the alien races had a little better physical description or clear pictures of each. However, what was given will work.
Overall this was well worth the money I paid. I would strongly encourage folks to pay a reasonable amount for this. It will encourage the author to create more going forward.