I don't really see the balance issue with the two races that are being excluded. As others have mentioned, there are other classes and archetypes that pose much bigger balance issues than these two races. Sadly, I only get to play PFS once every month or two due to work and family obligations. I was really looking forward to creating an Aasimar character, but now won't get the chance. I would at least liked to have had the option. As an old school AD&D player from the early '80s, one thing that has drawn me to Pathfinder is the versatility and vast amount of player character options. For what it's worth, I simply wish you wouldn't be removing these races as options for PFS play. I'm glad other races are being added, and like/support the other changes.