I love how well the new secondary info is integrated in the Lovelace frontend editor.
I would love this even more if we get the option to have an entity_id or an entity attribute as secondary info from the GUI. Plenty a times this is useful: wether it be my room temperature showing the the heater on/off state, the EV battery percentage displaying the charging state or my presence binary sensor showing my exact location… the list is endless!
To all you devs out there: thanks for making HA what it is!