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I posted a detailed feedback blog at http://sushilks.blogspot.com/2015/08/amazon-echo-sdk-developers-review.html Here is one of the feature I would like to request that's some what easy to add. (These are purely my views.) - Location Awareness I was talking with some friends and they asked me what's the difference between Echo and Google-voice. From my interactions the primary difference I see is that Echo is not tied to a person like the cell phones are. Instead it's tied to the home, it has a location where it exists and does not move. It's subtle but a very important distinction which changes the behavior of the people interacting with it. Everyone in the house knows where Echo is and when referring to it they will look in that direction. However it's a pity that current Echo itself is not aware of this. I say this because I have multiple cho-devices in my home and I am unable to give them some context of where they are, for example If I am in my bedroom and I say "Alexa turn on the lights" it's obvious that I am referring to the lights in my bedroom and not in the living room. Instead the system requires me to call my bedroom light as 'bedroom-light' and my living room lights as 'living-room-light' this I find very limiting and annoying. In the future I would want the device to be aware of the location where it's installed and understand what's within the room and what's outside of the room. There are also restrictions that need to be placed, as one room should not have control of devices in another room.In the short run a lot can be achieved if the different devices in the home are allowed to have their own groups. When naming devices in the room I would like to use a hierarchical name i.e. bedroom/front/light, bedroom/main/light. This way when I am talking to the Echo in the bedroom and I ask to turn on the light (“Alexa turn on the light”) it can just find the closest match within the room and turn on all the items that match(In this case both the light). I should also be able to say "Alexa turn on main light" to turn on specific light. When in another room I would need to say "Alexa turn on bedroom main light" to address it specifically. -Ability to identify people. There is another limitation with this device, it's unable to determine who it is talking to. This prevents it from personalization of any of the contents. There are many people that live in the house and they will all interact with the device the interaction can be very rich if it was personalized to the person. -Support for sending asynchronous event to Echo There is no mechanism to activate Echo from code running outside i.e. You can't write a program that makes Echo ask a question. Some one has to talk to Echo first before It can activate a program. There are security concerns for this and it's not an easy feature to design the API's have to be well thought out. But would be nice to have it in the future. - Language processing capabilities in the SDK. I also spent some time writing apps using the SDK. After a few iterations with application writing, it left me feeling that there is something missing with text processing. It's very good at parsing what was said, but there is a missing framework to extract the meaning of what was said. Designing the application around specific "utterances" are very limiting, it makes the application very rigid and fragile. Different people have different ways of saying the same thing so its very easy to break the application. This may be fine for very basic tasks, but as the complexity of the task increases it becomes hard to interact with the device.