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Who even needs this, dude?
New players don't play Heroes 3 because of the 3D graphics, new engines, etc.
Those who play Heroes are mostly old players, and if there are new players, they are those who never played Heroes before. Therefore, you won't surprise anyone with a new map; you'll only surprise "old players" with a very interesting, balanced, and challenging map. And that requires a lot of work... "Do you really need this, dude?"