I don't understand why people are so fixated on this experience thing, especially when most of the complainers aren't even willing to play even a slightly modified version of the "balanced" soda they're so obsessed with. A normal player would only need 10-15 games to get used to the new balance of castles, magic, and heroes. They should have learned that a long time ago. What's so bad about that?
P.S. When people say that Warlords of the North is a completely different game, it's just ridiculous. A different game is Heroes 4.