I decided to dig around again to see if i could help with the whole string id thing. Seems there are two parts to it. There is the item type string: COS113_000_F. Then there is the ingame string index:ITM_Cos_079. That second index is used by a master string table used for all text in the game it seems. This then points to a proper item name string of Three-Piece Suit .
So in theory, if a master table of all items can be found, grab their proper id and translation id, then find a pointer to this master string table, it might be possible to make a proper item dumper script.
random bit of info from poking around the translation table: MIL_Title_UCR028_0280 = "My dearest partner"
edit: Finding a master table of items isnt working as expected so far