[Cainehill]

You mean - you have the choice of wasting a global spell slot to try and play as Carrion Woods, with the inevitableness of it being dispelled or over-ridden when someone else casts a global. Not to mention that it then becomes, as Beorne said, a mishmash with carrion critters wandering around alongside the regular armies.

Essentially it seems that some favorite (CW, LotT, possibly others) and most interesting themes have been removed from the game.