Undead – a Necropolis mod.

I like the idea of the mod. I often play Heroes 5 with friends, and I'm really tired of the fact that the undead have become weaker. There are too many changes in the mod, in my opinion. I completely agree about the spectral dragon (it should have incorporeality). Is there a mod that only changes the undead dragon? And is there a mod that removes dark energy altogether or makes it not in numerical form but in percentages? And is there a mod where you can rebuild castles in Heroes 5 for the Stronghold faction? Sorry for the many questions; I just registered recently and don't know where to ask what.