The claim in 2012 by Ming-Ching Kuo was that Apple's 17-inch MacBook Pros were going to be discontinued due to poor sales. This surprised many of us but he ended up being eerily right. The inference with the 17-inch's demise was that the 17-inch was just too big. Yet, in light of the larger 12.9-inch iPad Pro and the recent Mac Pro debacle I wondered if that was truly the reason. Still, Kuo has been more right than wrong. In light of the prediction by Ming-Ching Kuo that the 15-inch would be the most redesigned Mac of 2017, perhaps a thicker MacBook Pro is in the offing which would not only allow it to go to 32GB of RAM but also allow it to have a very good GPU + bigger battery.Apple probably has no philosophical objection to building something like the Razer Blade Pro, but they just think it wouldn't sell a ton of units and isn't worth the development effort. I don't think Apple would ever build a junky 15" gaming machine an inch and a half thick, just to get a big GPU in there
Quick aside, I would buy a new 17-inch MacBook Pro in a heartbeat. That was my favorite size. I still haven't gotten used to the 15-inch size. I even prefer the 13-inch.
Ok now onto my thoughts about touch ID... given Kuo's prediction about the replacement of touch ID with 3D facial recognition in the next iPhone, along with the inclusion of a higher resolution 1080p FaceTime camera and secure enclave type chip in the forthcoming iMac Pro, this may be paving the way to allow Apple to replace touch ID on the MacBook Pros as well.