I really don't care about thinness below 13mm (roughly the N950/E7 thickness). Give me bigger battery anytime. It's like laptops, everybody had settled that 3h of life was enough (duh!) until apple came over and pushed the envelope to 7h. Now everybody is trying to shave a millimeter off their laptops and just make 7h, when 2-3mm more could mean 3h more. Same with phones. You can't really distinguish between an OG Galaxy S and an S4 one thickness-wise, while the S4 with 4mm more could double it's battery life.