I was surprised at the language choices when describing the Half-Elf and Half-Orc. _Many_ Half-Elves are "born out of violence"? This has always been a problematic area of D&D with respect to Half-Orcs, but I have never played in a campaign where it was common for a half-elf to be a product of rape (of an elf or a human). I have several thoughts:
1) If two of the base races are frequently products of rape, then rape is going to be an accepted story feature in your games. Are you sure that you want this to be the case?
2) If you are going to have rape be a part of the stories told in Pathfinder games, and have the game be more mature and dark as a result, I would suggest not watering down the language. "Born of violence" is almost a romantic euphamism for an issue that should either be dealt with in a more realistic way or not dealt with at all.
Although this is my first comment (as I am still reading my way through the rules), it shouldn't be construed as a negative impression. On the contrary, I think you guys have done a fabulous job from what I have read so far!
More comments to follow, once my toddler stops fussing....
Balsamic Dragon