Permission to copy per content type

Problem/Motivation

Currently, we can only apply the permission to 'copy' all node types...

The upshot of this is that in order to allow our users to create any one particular node type via a copy, we HAVE to grant them permission to copy ANY type.

This can lead to the user being able to believe that they can indeed do it...

But if they then try to do so, they might not actually CREATE permission for that particular node type.

It might add a lot of extra flexibility to allow permissions by node type...