Okay, after a quick look, i would say that all of the leaders need a higher gold cost. The Clan Mother is a Mistress Race and thus should have a higher health than a Dark Troll. Probably 24 health.
Wouldn't it be 'Kargg's Son' not 'Kargg Son'?
My first thought was that death was a poor choice as the default troll magic because only Zorak Zoran makes any particular use of undead, but... with the way this magic system was made death is most appropriate.
Good job, i hope you continue to develop this mod.
And designers of Dom 3, you are now required to make a Dom 4 based on Rune Quest/Dragon Pass.
Mike