I've said more than once in covering these reviews that many modern codices are often a disgrace. This is usually referring to the supplement codices, but many others show a complete lack of respect for the army or even the source material.
Codex: Grey Knights was an abomination, Codex: Sisters of Battle seemed to be written by people who wanted nothing to do with them or outright hated the army, and the less said about the last two Codex: Tyranids the better. In terms of rules they were either extremely underwhelming and forced the player to go through an uphill battle to effectively play, or were so simplistic they offered little beyond raw power.
Others still completely went out of their way to destroy an army's previous identity, such as Clan Raukaan which read more like the carefully planned destruction of the entire Iron Hands' lore. What couldn't be destroyed or retconned was altered to make them unlikable, turning them from the monsters the Imperium needed to guard its gates to hypocrites, hired thugs and ineffective council members being manipulated by a daemon. That brings us to today's topic - Codex: Iron Hands, a fan made creation which does a far better job of honouring the sons of Ferrus than the official material.