Great mod, fits perfectly well with the fluff of the game ! Balance seems quite good to me, but I haven't got the MPers talent to spot 'exploits' (falling short of a better word sorry

) . The dreamhunters seem a tad overpriced to me, but I don't like assassins much in dom 3. Even if they have many over uses.
I spotted the tohunga of water (sorry...) is, once transformed, unable to go back on land. I can't remember the lore exactly about transformers of theese legends (I do not know if they can transform back in the fluff), but it's highly impracticall. I think it is caused by their aquatic tag, you'll have to recreate a new unit using #clearstat command to get rid of it.(if you feel like it, of course)
Apart from that, the various tohungas would be so sweet with nice coloured crowns/hats. Plus one would be able to identify them easily, which could be handy at times.