Alright, quick question: After a player undergoes Apotheosis and becomes a Daemon Prince, they gain a new characteristic-Favour, which is measured from 0-100. There is a specific option for a newly raised player to trade in any number of their extant gifts for 5 Favour each, one time only upon their Ascension, suggesting they do not start with max Favour. Based on what I read, the assumption seems to be that you start at 0 Favour unless you trade in at least 1 gift or GM fiat starts you at a different amount. Did I miss anything that contradicts this, or do you simply start at 0?

As far as I can tell, yes, you start out only with the favour you got from shopping old gifts and rewards back in (plus any awarded as part of whatever event got you apostheosis).