Thank you for the most in-depth critique I've gotten so far, very much appreciated. I definitely will consider the possibility of adding more illustrations in future updates. We had planned to include art of the leaders of each faction at the very least, but ran out of time.
About the table of contents thing... I actually don't remember generating a table of contents for this. The file is made out of four individual PDFs so my guess is that the program I used to stitch them together and export them as a single file probably automatically generated a table of contents for it.