Those chaos warriors look very awesome. And those troop trees look very impressive. I like the way you incorporated towns, villages and castles in the troop tree and I like the idea of knighthood orders and chaos temples needed to create the ultimate troops.
Too bad all the empire foot melee troops eventually become greatswords. I think it would be better if you could upgrade spearmen and halberdiers to master spearmen/spearmaster and master halberdiers to prevent people from having armies composed entirely of greatswords. If you make high tier spear/sword and halberd troops people can make mixed armies using all of those. All the other features seem to be very promising. I especially like this: "Some units require more place in army."
This encourages people to use weaker troops aswell because they might be stronger in bigger groups.
And the duels before a battle is really in spirit of the warhammer board game.
All the new siege improvements will probably make sieges a lot more interesting.
Another question: Why only those 2 knighthood orders, why not more/others?
Why is it that russians are so good at making awesome mods?
Some russians made an awesome warhammer mod for medieval II total war aswell.
Good luck on making this