Right now I have a lot of conditional cards, just to show the media-player that is currently active.
This could be the TV, a WiFi speaker, etc. I use an automation to set the helper value of the media-player I want to show.
It would be so much nicer to just use that helper value as entity, for example:
type: media-control
entity: "{{ states('input_text.current_media_player') }}"
It’s the same for the ‘picture-glance’-card - where it would be nice to control (for example) the camera stream you want to see based on a template - and other cards.