How do you envision or would like to see the Swamp faction in Heroes of Might and Magic V?

In a new swamp, if there were one, you could add gargoyle jellyfish and, for example, a chimera as the 7th type of creature (the mother of all mythical creatures). And what about harpies? They would also fit well, living in the trees. I wouldn't mind if they were added, even as neutral creatures.