Hi Grant,
There isn't currently a feature request for this, however, you could create your own shipping options for different countries. You may also find this feature request useful - https://roadmap.siteglide.com/siteglide-roadmap/p/ecommerce-advanced-shipping-options-custom-fields24
If you'd like to see this within Siteglide, then please do add a feature request to our roadmap here - https://roadmap.siteglide.com/feature-requests22
Alternatively, you could reach out to our Experts31, who could help you set this up.
Thanks!