Don't you think that the new Necropolis has become terribly similar to the undead from Warcraft? There are also pyramids and ziggurats, sphinxes. The Lich looks like the King of the Dead, the ghost resembles a banshee, the zombie is just like in Warcraft... It's not very original. I'll play as Humans and Elves.

I'm very interested to know if only Necromancers can transform castles.

I think that this reference to the ancient Egyptian style is enough. They've slightly changed the "zoo," probably replacing three creatures. That's good too. Necromancy now works during battles – an unprecedented (or am I mistaken?) phenomenon in the series, but it's a good idea. For now, I like the direction the developers are taking, especially regarding the Necropolis.

You're wrong! There's the Raise Dead spell, which is basically the same thing.

Added 2 minutes later
Where did you find the images of the creatures? Show me, I don't see them! Only in the video...
By the way, I've always thought that the dead guys with claws are just zombies...