OMG YES!!!!! ABSOLUTELY!!!! That would make the evil arc a thousand times better than it already is.
Heck, whether you go the route of siding with shadow druids or goblins, Halsin returns to murder you all, and it's a huge fight in the end to kill him. You could have Minthara and/or Ragzlin and/or Gut on your side and/or even Olodan and Kagha, all fighting against an enraged Level 15 Halsin, or something insane like that. He's tossing goblins around like ragdolls and slashing up bugbears and ogres. He's calling lightning down from the sky and creating earthquakes.
Talk about NATURE'S FURY!!! THAT would be Nature's Fury.
