the creation of card_templates (an offshoot of button_card_templates but for styling all cards, which would obviously be a new project)

[jdtechsol]

Is your feature request related to a problem? Please describe.
yes but only that the feature, or rather, addon, does not exist?

Describe the solution you'd like
button_card_templates to be made into its own HACS addon but for any card

Describe alternatives you've considered
card-mod but button_card_templates is better imho

Additional context
none

[Mariusthvdb]

Did you check decluttering-card?

[Mariusthvdb]

in all honesty: I feel this should be discontinued/closed as the obvious option would be card_mod for ll cards but button-card, optionally in combination with decluttering-card, as mentioned above.