The most anticipated race.

Is that your conclusion? They took elements from Nival, something from Heroes 3, something from Heroes 4, and added some new things. Since there's no swamp with barbarians, it means it wasn't needed, but instead, they added dwarves. Any continuation of the game should have some new elements; something has to be sacrificed. In this case, it's your favorite barbarians and the swamp, but don't despair; maybe they'll bring them back. Let's see how the dwarves turned out.