What this option does is offer players a flavorful sorcerous origin that fits in with 5e's lore seamlessly. It is possible that the option is a little op, but we had no issues with it at lower levels - feels on par with regular wizards, I'd say.
Bottomline: this is a great little product that feels like it could be an official part of the game. It left me thinking... How is a genie sourcerous option NOT in the 5e core rules??
[5 of 5 Stars!]