The idea is simple. Why create new features and options for connecting to a new device when its already developed?
Spotify can currently change the device playing music within a LAN in a way that is so seamless I jumped the first time when there were no delay. Why not use this already impressively implemented feature for chromecast? If chromecast was available as a device then it would make it a lot easier for us to use on the computer too, which is the main music player when anyone's home.
My guess is that a chromecast can't truly act as a device, but there should be a way to do this through some back-end trickery. Especially if there are unlicensed 3rd party programs that can cast (popcorntime for example).
We appreciate you coming to the Community and adding your votes and comments to this idea.
We're setting this idea to 'Not Right Now', as this isn't something we have any immediate plans to implement. If we do have any new info to share, rest assured we'll check back in here with a new status.