Well, you are getting a mixed heritage cat, not so much a breed of cat. These kittens are not being bred to be Savannahs as much as some cool sort of hybrid kitty with an undefined "wild" look. And there's not really much wrong with that unless you really want a Savannah, so one with the looks and temperament of that particular breed. There is a reason we call something a breed, because it has been bred with an aim in mind. And it is more likely to come with those traits...in this kitten's case it might inherit more characteristics from any of the many breeds in its heritage (Savannah, Chausie, Pixiebob, probably Bengal too), so make sure you research all to know what range you might expect... I do think all those named breeds are cool in their own way 