[PrinzMegaherz]

I think it was a rather good decission to combine carrion woods with normal pangaea, as carrion woods was one of the weaker themes out there and in some aspects just a cheap copy of ashen empire.
The new late era pangaea gives you a choice: You can play as you would have played with the old theme, using the carrion woods spell to erradicate the population, or you can use the normal troops. Having a choice is not a bad thing, if you would like to play late era as carrion woods, then by all means, do so.