Another little detail I encoutered recently...
In the tomb scenario you dont roll for activation for the spawned ghouls, so how do you kill them? Maybe chang their default two activations to a roll? Or let them be activated by the players like in the moonbeast scenario?

Another good source are Frostgrave, Perry miniatures, Wargames Atlantic or Mantic. By far cheaper than Games Workshop (but I agree, their Underworlds and Warcry minis are wonderful), and ideal for kitbashing, like this guy. 

Ludloff and his trusty retinue of Hunters, ready to cleanse the lands of sinners and secure relics for the High Shepherd!