No one will push a laptop to full load on a battery. Apple can pretty much throttle power on battery mode and no one will complain. As for the wall charger, the

No one will push a laptop to full load on a battery. Apple can pretty much throttle power on battery mode and no one will complain. As for the wall charger, the design can be changed. Alienwares with gtx 1070 can go upto 115w tdp with AC adapters without any problem. As for cooling, Asus ROG Zephyrus cools a gtx 1080 with a size comparable to macbook pro.