The issue with with these roles that I don't understand, why can't they in inherit customer context? Ie, I give an SLA access to my data. But the callee has to

The issue with with these roles that I don't understand, why can't they in inherit customer context? Ie, I give an SLA access to my data. But the callee has to be an account role already. So when the SLA goes to access my data, that can only be my data. This is sort of your templated role idea, maybe managed templated roles, but I basically create a service role, and of course because its local to my account, there is no access by the service generally to customer data.