This is not a bad idea. But meanwhile, are you are you can customize the text styles, also create your own text styles and apply it, including to multiple elements at once? It shouldn't actually happen very often that you need to change fonts for individual items. If you find yourself often wanting to change the font of staff text to Helvetica, for example, you can just change it in Style / Text. Or, if you want to have some staff texts in the default but others Helvetica, you can create a new "Helvetica Text" style and apply that using the inspector.
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This is not a bad idea. But meanwhile, are you are you can customize the text styles, also create your own text styles and apply it, including to multiple elements at once? It shouldn't actually happen very often that you need to change fonts for individual items. If you find yourself often wanting to change the font of staff text to Helvetica, for example, you can just change it in Style / Text. Or, if you want to have some staff texts in the default but others Helvetica, you can create a new "Helvetica Text" style and apply that using the inspector.