My 12 year-old son has a LATD army. It's around 3000 points in size and he plays it Undivided. He has huge mobs of mutants he's converted from Catachan and Zombie sprues, drilling holes through them in awful places to show they are really Plague Zombies. Add to that a Defiler, many Terminators, and a whole bunch of Traitors, Plaguebearers, Chaos Space Marines, more than half a dozen big mutants, and led by the Great Unclean One himself, I enjoy facing him with my sturdy Cadian force.