Allow users or to configure wake words to use a specific skill as the context.

Probably best to use the skills installed as the wake word and have a finite list of currently active wake words.

Alexa, ask Lyft how much a Lyft Plus from home to work
becomes
Lyft how much is a Lyft Plus from home to work

Allow skill builders to reference the wake word for a device when sending responses back from a skill.

This would allow skill builders the ability to include precise instructions for how to use the skill or Alexa 1p functionality to their customers.

It would be useful to be able to link multiple accounts to a single skill, e.g. a third-party authenticated music service that allows tracks to be added to a Spotify playlist.

Imagine if a parent was on business travel, and a child was able to say, "Alexa, say goodnight to Dad" and hear their Dad's voice respond with some custom audio. It would be a great way to always hear a loved one's voice. This could be applied to any number of things if you could access that skill in Routines.

Allow developers to add a form on the smartphone in order to collect data/preferences for the user without having to do the account linking.

When the user download a skill, before the first execution (and maybe after, when he wants) on the smartphone he have to fill a form with useful data/information in order to customize the skill.

This parameter can be at user/device level and stored on dynamodb for the persistence

I am creating a skill which lets users record personal events (like what they eat whenever they eat something). In our home we have two accounts. It would be bad if one person recorded to the other person's account. So it would be very helpful if my skill could ask the user their name, determine what the current account is, and if it is not the account of the user, switch to the account of the user.

Would love to be able to ask Alexa what the barometric pressure is outside. My dad has breathing problems and thinks his bad days are linked to the BP outside, but when you try to ask her, she just gives the outside temp and weather forecast.

Add the device category Valve to the Display categories list :
https://developer.amazon.com/en-US/docs/alexa/device-apis/alexa-discovery.html#display-categories

Greetings, When Alexa responds to a voice request, my wife and I routinely say "Thank You Alexa". Alexa never acknowledges the thank you let alone say "Your Welcome", Could a toggle be incorporated to allow her to do so if one wishes? Just a typical polite Canadian couple.

I want a custom error for the case when my thermostat is not in a scheduled setting. For this, I wanted to use the "NOTINOPERATION" error type but i don't get a very clear message. I would like something like: "The thermostat does not have any schedule to resume"