There is lots of stuff in the game, left in from 06 like graphics for the Cats, Lions, Maori even some National league one teams. Trouble is, they are not hidden teams and not everything is there so you can't actually add them.. its like they have added stuff in so that modders can use it when we find it in the database file.. although most likely they figure these teams like Cornish Pirates, Rotherham etc will be promoted and so half the work is done for the next game as they can just use that.
I don't know whether to feel sorry or have a go at EA staff who made R08, because they either are lazy or have a hand tied behind their back. From modding this game when you see what they have done, it is craziness compared to other EA sports games. This game is incredibly easy to edit, yet it is let down by generally being 5 years behind the other games with the basics.
Regarding ERC/WL.. there is a seperate roster file for the ERC/WL.. unfortunately there is an issue with editing/creating it in the editor.. which we are not sure is being caused by the game being bugged, or the editor being bugged and not making a 100% compatible rdf.
I did notice however that when opening a newly saved rdf using a hex editor, the text is updated, although it doesn't appear in the game.. so i think personally it is a bug or corruption with the creation process from woosaahs editor.