Many thanks for the extensive replies,
Endoperez,
Migaaresno and
Meglobob. I'm looking forward to playing Dominions 3 even more now.
Now, I don't mind the absence of a true "ork" race. Having lots of 'umies, some kick-*** monkeys and some though elvish-like folk seems like a truly interesting mix!
Oh and demons ... Excellent, time to get nasty.
See you all in multiplayer once I have received my copy, read the manual and dipped my feet in the single-player portion.