ItembySerial()
CharbySerial()
edit: Note that we already have CalcItemFromSer() and CalcCharFromSer() that both accept serials and return objects.
These two seem to accept a string and return an object
AddItem()
AddNPC()
These two are much like CreateDFNItem(), CreateBaseItem() and SpawnNPC(), but with less functionality
If anyone does use them, feel free to respond and let me know so I won't delete them, on the other hand, if you know they are obsolete, speak up so I can remove them.