I like to display slideshows of random photos on my TV screen (e.g. from all photos in 2017, or any custom album). This option is not available on the new Lightroom CC (I use it on iOS, tvOS and macOS). Is it planned in the future? I want to get rid of third-party programs like Apple Photos or Flickr to do so. If so, I would consider a subscription to a plan fully based on cloud storage by Adobe.
I'd recommend you to add your feature request here Photoshop Family Customer Community so that our Engineers who monitor this space can look into it and provide you with more information on this.