WTH Constants? What constants?

Am I the only one missing “constants” in HA?

When creating dashboards for multiple devices having different screen sizes you usually copy dashboards and re-arrange them to suite device. However when dashboard has card that has parameters to customize it (e.g. Gauge Card has severity parameters) in order to display card consistently on all dashboards you need to update it’s parameters on each card instance in dashboards manually instead of updating some “constants” in a single place.

In some cases it is possible to use !secret, however that works only in a few places. The globally available “constants” would be very convenient and useful thing.

Not sure if this helps but I after I add the card I switch from the graphical to yaml editor so I can copy paste the whole thing. Speeds it up immensely on complex cards. I do the same for complex parts of automatons too.