Context Based Skills
Allow skills to be context sensitive based on the setting/location of the given alexa device.
For example, if you have an echo dot in each bedroom of a 3 bedroom house, it would be a lot more intuitive to be able to walk into the bedroom and say "Alexa, turn on the lights" - with the context being associated with the echo dot in that room - inferring just the lights in that room, not all lights in the house.
In addition, you'd still have the traditional tagging such that from elsewhere you would have to provide context - so from the kitchen, the message might be "Alexa, turn off the lights in bedroom one".
But in the kitchen, if you said "Alexa turn on the lights", this would, naturally, infer you only want the kitchen lights on. :)