Which units (BASED ON THEIR APPEARANCE) in the Haven castle do you dislike?

They would definitely ride griffons themselves, and there would be a unit of griffon riders (our answer to the Dark faction with their lizards! :D)

You can't ride griffons; they fly and wouldn't be able to withstand the weight of a warrior, especially with armor and weapons. Griffons are a good addition for the humans, adding some variety to their otherwise monotonous life.