Which units would you replace in the Sylvan castle?

I like everything, except for the dragons! They are practically a copy of the black dragons from the Dungeon faction... I would really like it if there were Magic dragons - like in the fourth game. They would fit much better, and besides, they are completely different from the black dragons, which would make it more interesting. And to avoid having two mages at the same time, remove the Druids and replace them with Pegasuses.