In switching from my 13" Air to the new MacBook, the main thing I missed was the extra battery life. In an effort to reduce the data usage of my computer while tethering I installed an app called TripMode (https://www.tripmode.ch). It has helped cut down on my data usage but, just as importantly, it has added hours to my battery life. While your mileage may vary, I just wanted to throw this out to other forum users in case you are looking for ways to squeeze more battery life out of this wonderful new laptop.