Allow Specialized VM cloning
Support for cloning seems to focus mainly on VM's that are Generalized/Sysprepped. There are scenarios where you want a duplicate of the VM without Sysprep (DR, Lab or Dev scenarios). Yes, I'm aware of DevTestLabs.
Since Azure controls all the OSI layers it should be possible to allow deployment of specialized VM's but at the same time prevent any identical VM's from ever talking to each other at the network layer.
Ingolfur Arnar Stangeland commented
Note that this was easily possible in Azure Classic but was made all but impossible in Azure Resource Manager. A previous suggestion from 2014 was closed with the comment that this is possible but that is referring to Azure Classic.