Add Format to Current Theme

Customizing themes in Power BI is currently cumbersome and an incomplete feature.

To simplify the process, I'd like the ability to add ALL format settings of a visual I select to the current theme.

Example use case:

I format one visual the way I want, with the font settings/size, colors, and effects. Everything visual! I can then right-click/select from a menu "Add formatting to the current theme".

A possible extension to this, when selecting the option to add to theme, give the developer the option to select which items from a list, e.g. say I just changed the font size and only wanted to update that.

This would significantly improve the process of creating themes.