Since there's not any kind of Challenge Rating, or total XP for an NPC, how do I determine what is an adequate threat for my players? Plus, as my players earn experience and advance in skill, I'd want them to fight enemies of increasing skill.
The chapter on Adversaries denotes how to create minions, henchmen, and nemeses (more or less, the same way you create a PC, but with tweaks). But after several sessions, my PCs will be much more powerful that a "freshly created" NPC. Do I just go through the effort to track the XP awarded and up the stat blocks appropriately with new purchases?
Help me, FFG Designers… you're my only hope.