Downloading now and going to take a look at it, Edi.

I'm actually surprised that you incorporated so much of my feedback/suggestions.
Initial Reactions: First and foremost, if you're going to keep that extremely high base encumbrance on the Shadow Priestess, say something about it in the fluff. (I recall the Nightmare Onyx Amazon unit having a fluff reason for their high encumbrance.) It's something disconcerting to find out.
As for the Shadow Priestess, as a whole, I didn't try to 'kit them out' in the short time I had, but my initial impression would be to drop their random paths (they give you nothing that the Grand Thaumaturgs don't, and they're both capital-only), reduce their cost to about 160g (maybe a bit lower), and make their encumbrance something 'normal'. Maybe not 'undead' normal (0), but lower than 10 base.
The Renata/Renatus I find overcosted; I would recruit enough of them to give me some variety, but I would never rely on them. I compare them to the Master Shugenja and Onmyoji of Jomon (i.e., similar LA mages), and find that at 160g, they would have (almost certainly) one less path than the Jomonese mages, but would be sacred. This seems a fair trade-off. I'm still not sure I would use them (the Thaumaturg is such a good priest-mage on so many levels...), but they'd be at least a better buy.
Anything else 'in particular' you want me to look at?