I think that for a simple expansion to an ongoing product, this is a game that's well worth the money.
1. It opens up hero/boss battle campaign - Champion of the Arena - which lets you try various tactics and strategies. Almost awesome - it would have been completely awesome it there was a way to use your rage at least in hero battles.
2. It opens up a mini-campaign with great replayability and the option to try various lineups against various strong enemies - Defender of the Crown.
3. KBAP has been expanded with new tactical possibilities and new content. To the regular player it may not seem like much, but to the hardcore player who relies on various army setups, strategy and cunning, this is a completely new game.
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