Light card - Enable showing all lights within a group

[Kodemikkel]

I hope this is the right place to post this.

Currently, the light card only supports 1 light or light group. However, if you add a light group, you cannot individually set the color/temperature/brightness of the lights within that group using the card. You can only set this for the group as a whole.
It would be a nice addition to the light card if this was possible.

Another solution would be to enable adding multiple entities to the card, instead of only the 1 currently allowed.

This is the card in question:
https://www.home-assistant.io/dashboards/light/

The card itself is fine, but I would like to see the possibility of setting each individual color, etc. in the "More information"-dialog that opens from the card:

Maybe a toggle switch in the dialog that opens, or a YAML-option when creating the card.