Thanks for posting here in the Community. We appreciate your feedback and your passion for this feature!
Your voice has been heard and we’re currently in the process of launching podcast video playback on the big screen via Chromecast as well as some Android TVs.
If you'd like to see video playback on other big screen devices as well, we'd recommend having a look in our Idea Exchange, where you can either vote for an existing idea or submit your own. Below you'll find a few ideas we think you might be interested in - feel free to add your +VOTE and comments to show your support:
With that said, in case you are experiencing issues with either Cast or Android TV app playback, it'd be great to first follow the steps in this support article and should the issue persist, please start a new topic with the following information:
Thanks - Keep us posted!