I used to play ALOT of Mordheim, honestly. I loved the ability to play a campaign, advance characters, etc etc. Many years ago I had a really great Shadow Warrior warband, but I ended up losing all the models (don't ask)
I'm actually working on building a new warband. Refusing to do anything 'simple', I took the rules for the Beastmen, and have renamed them as Warriors of Chaos; the champions of the frozen north, armored in vast iron and bred for war... it works perfect with the better-than-human statline that most beastmen get. The Chaos rituals still work for spellcasting, and my friend has allowed me to, once we start playing, strap on the Rituals of the Pit from the cult of the possessed.