I've tried having other people sit in and play important NPCs (a mentor, the villain of the day, etc.) for several sessions after reading about the idea from a story. So far, my only problem is finding people to do so--the players liked it.
 Anyone else ever try something like that?
Say the Siddies decided on the Gold Faction's plan to try and salvage the Solars. Any ideas on what would have happened, taking into account Yozi and Malfean interference?
I know it's likely a mistake on the part of some content editor, but Malfeas is described as a Demon Prince.
 Demon Princes are now declared to be Third Circle demons.
 Wtf?