In regard to choosing good or evil I think they made it worse. You actually dont know what is evil in this game. You can do whatever.
FIrst I was kinda nervous about killing the grove, but after I did it and a while I realized: "Well nothing is happening, hmmm let me continue killing everything, hmmm I finished the first act and everything is dead. Did I actually have a choice and did it matter?"
It's like the Idiana Jones Raiders of the Lost Ark movie: You dont need the characters (like Indiana Jones) in order for the story to happen.