I got this book for my fiancee (GO GAMER GIRLS!) for Christmas.
The new gods are interesting, but the mechanical support for these ideas is weak.
Most of the bonuses granted by various spells, domain powers and such are untyped. This wouldn't be much of a problem except that the designers didn't seem to realize why bonus types are helpful. For example, the first level domain power of the Dwarf domain grants dwarf-like saving throw bonuses. Even though the bonus isn't typed (and is therefore not a racial bonus), they feel the need to specifically point out that it stacks with the dwarven racial bonuses to those saves.
Many of the feats are of the classic +2/+2 variety, but nobody told these guys that in Pathfinder, those feats get a bump at 10 ranks, keeping them useful throughout a PC's career. But then, a number of the spells and domain powers don't scale with level either. So using these options may ultimately make your character weaker.
And then there's the completely useless stuff. Like the spell compass; A 1st level ranger spell that automatically determines true north. Considering that rangers can already do that with a DC 15 Survival check,(better than 50% odds for a 4th level ranger) it's a little silly for them to waste a spell slot on it. And once a ranger gets to the point that they can maybe waste a 1st level spell slot, they're also to a point where they aren't going to fail that check.
I might buy the PDFs of their other books, but the cost of the print version wasn't worth it to me.