A code-generated clone() method for EntityObject
It is often useful to be able to deep-copy an entity. Currently, some lifting is required to get this done; most suggestions on how to copy entities require serialization and/or reflection and therefore are performance hogs.
The EF has what it takes to offer a really efficient clone() method: the framework could provide generated code that simply copies the required properties. As for referenced data, I suggest that that can be copied optionally and that it can stay in memory even if the clone is detached.