So I got this shiny new idea from sing Spotify on my LG Smart TV. Seeing that the Spotify app for LG Smart TVs are readily available, how about an implementation of the Spotify Connect feature to the smart TV platforms as well? This way, it will make it even simpler to control Spotify playing music on a TV using a phone, tablet or a desktop/laptop. Of course, I'm sure some things could discourage or demotivate the development of this feature, such as the amount of people who actually found out and use this feature on their TVs, but I think this feature would help anyone who uses the app on their TV anyway.
And, of course, I would want other brands of smart TVs to see this feature as well, so I wouldn't be suggesting this only for the LG Smart TVs out there.