Lavanya Six's review
The author has a great deal of fun with remixing the canon universe in this AU and isn't afraid to kill off certain characters in the backstory — or make them have never existed in the first place, like with Katara and Sokka.
It makes excellent use of its AU nature, really having fun with all the differences and new roles for familiar characters. Most importantly, all the characters are spot on (unless they're supposed to be different), especially Mai and Toph (two characters whose nuances are usually lost on fanfic writers). A very fun read.