I would like to see some improvements as well, e.g. A theme variable for badge size and a theme variable for font size.
Do you guys know there is a feature request in the Frontend-respository, which would make styling o/theming of such things a lot easier?
Have a look there, it could use some support/upvotes: Introduce "Custom styles / Templates" section in core cards for much easier change of CSS/styling of cards (like bubble card) Ā· home-assistant/frontend Ā· Discussion #22745 Ā· GitHub
Every has-to-be themable/stylable asset thing of HA would benefit from this, and would make life of custom themers a lot easier!
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Maybe join in on my request for the icon sizeā¦
Adding those theme variables would be much appreciated
Ofc. Would you perhaps think about adding font size there as well, so there is no need for another Fr?
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consider that done
The thing is that itās an issue with the HA and not the integration. But nevertheless it probably should have been reported somewhere else anyway as the matter affects many versions of HA. 
And font-family so the hard-coded Roboto font becomes optional for usage.
At the moment there is no way to fully 100% get rid of it, as there are always hard coded Roboto-parts left in the core UI (admin and front-end) code which looks really amateuristic once you decide to use a custom font.
yeah, but I suppose we shouldnt overload these FRās
font family would warrant itās own FR probably, given the nature of if, and requirement to download these fonts externally, and not just setting a CSS variable
What do you mean with āFRā?
Feature Request
They are collected in the Frontend repo under the Discussion section (and not in this community under the FR section)