Get a device's Primary User in Intune API Response

As of right now, the production Graph API response for querying the list of all devices in Intune only includes the email of the device's Enrolled By user.

https://graph.microsoft.com/v1.0/deviceManagement/managedDevices  

{"id"=>"{managed_device_id}", ...., "emailAddress"=>"**{enrolled_by_user_email_address}**", ....}  

We need to get the email of the device's Primary User, which isn't included in the API response at all.

By using the Beta version of the Graph API, it's possible to query an endpoint to get the Primary User's email address, but that requires a separate query to be run for every device, which isn't feasible for us as we have a large amount of devices.

https://graph.microsoft.com/beta/deviceManagement/managedDevices/{managed_device_id}/users  

Are there any plans to add the email address of the device's Primary User to the first list query?
If so, is there any timeline for this implementation?

This is a really critical point for us, as we enroll the devices internally first before sending them out to the end user.

Thanks in advance!