You can now create your own custom label templates for stock labels!

If you go to Settings → Label settings → Custom stock label templates, then you should be able to make your own label template. Having made a template, you can choose which container types should use this template.

This is a complex feature, so we've released it as a "beta" - so don’t be too surprised if there are some teething issues with custom templates, but you should now have the tools needed to make these labels look however you like (and can quickly swap back to the default template if needed). 

This was another great suggestion from our community, thank you to everyone involved in shaping this.