Support non-restricted Gmail scopes in AuthKit (readonly, send, modify)

I want to be able to configure AuthKit's Gmail connection to use non-restricted scopes (like gmail.readonly, gmail.send, and gmail.modify) instead of the restricted 'mail.google.com' scope. This is important because the restricted scope triggers Google's verification process immediately, which I want to avoid for applications that only need to read, respond, or flag mail as read. I'm requesting the extension of the Gmail authkit spec to optionally include these items if the overarching gmail spec is de-selected.