I want the ability to set my Nest Thermostat(s) to ECO mode when I set my alarm to Away, via IFTTT or other platform. This used to work with Nest Accounts, and no longer is supported once you convert your account to Google.
As an Enviormently friendly company I would think something like this would be a super high priority for Google / Nest.
Google Nest Help Center
Chromecast Help Center