The Mate 2 is a HUGE 6.1" phone and nearly twice the weight of an iphone. This is not a solution for most of the phone market. I own a N6 and I have huge hands and its a bit much for me. Its uncomfortably huge and heavy. I can't imagine most people being on board with a heavy and huge phone because google can't get its shit together on power savings.
Back when I was carrying my Nexus S around, I would have happily paid $50 more for a model designed to contain a double-sized battery. [0] My hands tell me that the battery is quite a bit less than 25% of the total weight of the device, so the weight cost would also be quite small; no more than ~1.5 additional ounces.
It's not a rule that one has to choose between a relatively small phone with shitty battery life and a phablet with somewhat less shitty battery life. One could have double or triple-sized batteries in the smaller phones!
[0] The problem with all of the aftermarket batteries that I saw was that they required a new back cover that contained no NFC antenna.
Blu makes a 5-something phone with a 5000mAh battery. It's sightly thicker than other phones, but gets several 24-hr days. There must be a compromise. It's not just Google. iPhones and Windows Phone devices also can't get through a day without charging because OEMs stick tiny batteries in, then shove power hungry components on top.
