When you say a prince can struggle with ego, could it also be a lack of ego? Like, say a Prince of Breath or Hope who suffers with a lack of self confidence or self worth? Not sure if Dirk counts for this.

That’s a way to see it, similarly a friend of mine got Heart in the Canon Aspect Quiz, and didn’t like it because they weren’t obsessed with their Self- Until they realized they were SELF Obsessed, as in, with the concept of the Self and oneself rather than specifically on themselves. I could see a lack of Ego being an interesting Prince Twist.