A very nice write up of my favorite races. The gith, merfolk, and thrikreen. The exotic weapons are mostly balanced, and the feats are neat too. Just a great sized product with a good understanding of 5e power balancing.

Top quality. Not just races with background, but racial Feats and "exotic weapons" from Kara-Tur.

The exotic weapons alone are worth the sticker price. They are well-designed and fit in with the existing set of weapons. A Sai is different from a Dagger in material ways, a Nunchuk is not just a Club, a Katana is not just an over-powered Longsword. Everything has neat trade-offs and a good exotic flair.

The first book provided Feats with a racial pre-requisite. Those feats covered each of the new races along with the existing races. This book provides a racial feat for each race presented along with a few "regular" feats based on specific stat pre-requisites.

Of the races, I think the Hobgoblin is the stand-out for me with a neat Leadership feature that really sets them apart from the other goblinoids & half-orcs. It's also nice to see a good variant of the Thri-Kreen, as an old Dark Sun player, these were one of my favorites and this is a good treatment.

Oddly, my biggest quibble with this book is actually the Shardmind. To me, the Shardmind is really a Construct like the Warforged and really deserves the "sub-race" treatment along with them. The telepathic communication feature likely needs a little more descriptive text on limitations, but the resistance to Psychic damage is a good Psionics touch in a world that doesn't yet have formal psionics. Overall, the Shardmind thing is likely beyond the author's control given the current status of Warforged and Psionics with are both in pre-release via Unearthed Arcana.

Overall, these are tiny quibbles on an excellent product.