Chromecast Support for Slideshows
Apple TV has its own dedicated Lightroom app for displaying your photos. I wouldn't expect Android TV to get the same treatment (though I would love it if it did) but I do think Chromecast support would have broad enough appeal to be plausible. In fact if we can only have one or the other then cast support makes more sense than Apple TVs because: iPhones could use it too, a lot more cast devices exist out in the wild than Apple TVs, and the development resources required to maintain the ability to cast slideshows would be minimal. I hope to see this on the roadmap some day.