How to manage O365 Group membership through AD Security Groups and/or nested O365 Groups?

I would like to add my voice to the mix.  We need the ability to add an active directory domain security group as a member of an Office 365 group.  When we onboard new employees we copy the AD account of an existing user in the same role so the new employee automatically gets added to the same groups as his coworkers in that role.  We can't easily identify and add the new employee to all of the Office 365 groups that he may need to be a member of.  I would be fine with doing this using PowerShell (add the object ID of the security group to the Office 365 group or some such) if that's what would be needed.  By the way, we are a gold partner so if this is being discussed in a forum or in preview under NDA sign me up.