The only ways I can see this having a good fall out is, one of the two halfway through the conversation with Ioun going, “Yeah, you’re great and all, but no thanks” and it being a deliberate character choice to REFUSE Ioun. Or Ioun telling Percy, “I’m flattered, but seriously, Erathis called first dibs on you when you were a kid, and I’ve already been convalescing for 800 years, I don’t want to piss her off.” Or her telling Scanlan his better-fit deity. Whoever that is.

Ha! I am on board with all of these options. Especialy with Erathis calling dibs. Yes, please.