The Lord of the Rings

Here's the issue regarding which side to play as: it seems that the player can only play on the side of Evil (Red - Sauron), and if they want to play for Good, they need to change the settings in the editor. Which color should be chosen in this case? Orange, to play as Frodo?
And another thing that bothers me: "allows for a completely different plot development." In my opinion, if a map is based on a particular work, the author's responsibility is, on the contrary, to ensure the correct course of events and a finale that corresponds to the given plot.