[Mithadan]

In my view, the duel between the Balrog and Glorfindel was basically rewritten as the duel between Gandalf and the Balrog, even to the details of the Balrog tumbling down from a great height and bouncing off the side of the mountain (because either his wings were injured or were shadows incapable of supporting his weight or.... never mind).

I would have liked to have seen Tolkien rewrite the duel of Ecthelion and the Balrog. Impaling a foe on the spike of one's helmet seems inelegant.