OTA updates have been seamless, but the out-of-box still requires some conf file editing, which may be a turn off for some. It did automatically discover AppleTV, Roku, and Hue (easy pairing).
For integrating "homebrew" sensors I was able to roll MySensors[0] platform with parts lying around in drawers to get house-wide temperature monitoring with a few lines of yaml.
Looking forward to further refinements to the platform!!