I generally really enjoy my USB-C riddled MacBook Pro.
The one thing that kills me, though, is that Apple itself still hasn't bothered to ship a USB-C cable for the Apple Watch. I'm ready to eat the costs of an early adopter and upgrade most of my peripherals to be USB-C... but jeez, it's been one and a half years, and Apple still hasn't solved its own ecosystem problems. To make matters worse, Apple prevents others from making a USB-C Apple Watch cable, too, so I'm stuck carrying an adapter whenever I need to charge my watch.