A thinner, slightly faster, slightly blacker horse that will needs to stop for water a little sooner.
I like the 2016 MacBook Pro. The disappointment I felt was that after such a long wait for the update, I was expecting/hoping for a best of breed laptop, with no real flaws. In day to day use I don't actually think about its various (and widely discussed) flaws so much, and I just get on with using it as a tool to do my work.
Maybe they just decided that the prosumer market is larger than the pro one and they can charge the same prices. They don't build many models so they're placing theirs in the larger market and leaving the smaller one.