Allow a large organization to pre-validate custom domains/subdomains for ALL app services.
As a large organization it is very painful and slow to have to request a TXT DNS record be created for every single web app our developers need to create just to validate a subdomain we've already validated several times.
If I own
I should not have to validate
OR when using path based:
on our web applications in our subscriptions/tenant.
This is of primary concern because we host all web apps behind our application gateways and so users never use the domain to directly access the web application but the apps need to "think" they are for cookie/authentication reasons.