Thanks for reaching out.
Currently as Entra External Id is still in preview, we have only specified user input types defined for the attributes.
However, you can create events on attributes before collecting the info from the user and at time of attribute submission.
You can translate the sign in page and its attributes using company branding as well using user flow.
To translate the values of countries, you need to pass those values in that language to display on sign in page.
Reference - https://video2.skills-academy.com/en-us/entra/external-id/customers/how-to-customize-languages-customers
We have been receiving feedback and suggestions to make the product better. You can submit the request here https://feedback.azure.com/d365community/forum/22920db1-ad25-ec11-b6e6-000d3a4f0789and our engineering team might investigate it.
Hope this will help.
Thanks,
Shweta
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