Foreach logic in Dashboard cards

[JQDigital]

Creating a dashboard for largeer amounts of entities can be a headache. It would be great if its possible to have a foreach logic based on groups.

usecase:
I have 10+ sonos speakers in my house.
All speakers are grouped together in a helper called: allsonos
It would be nice to create a dashboardcard with: volume,bass, treble, loudness for every sonos player.

this would have many different usecases and will dramatically reduce the time needed to create detailed dashboards.

also, when someone purchases an additional speaker, it could be added to all cards automatically. It would simply require the user to add the speaker to the group entity.