Draconomicon also has some of them. Rituals which are usefull to dragons trying to improve their lairs but not of much use to PCs. So maybe we'll see a change in how 4e handles explaining such out of combat acts of NPCsThe thing that confused me, is not that there isn't any NPC rituals, but that there's one but not more: there's a ritual to become a Lich in the Monster Manual, and it's obviously not intended for players (since there's no rules on how to actually give a player a template)
Why arent there more of those?