True, but I believe WB already knows about TATW, atleast now after they noticed how high quality products mods can be. And if you just google LOTR-mod, TA is propably one of the first to come up.
EDIT: Exactly Ztree.
Recently Day-Z showed what a mod can do to a products sales, Arma II sales exploded for long period of time. Ofcourse this has the side-effect that publishers take notice of this, but good thing is that developers see what a mod can do to sales of old product.. It's propably exactly this what WB is afraid of.