I'm sure I'm not the first with this thought, but I notice that the language of Arcane Apotheosis (of the Sorcerer Arcane Bloodline) is extremely none specific about type of item used. It occurs to me that in many ways, at higher levels (especially combined with things like Robes of Eldritch Heritage) you could use Arcane Apotheosis to power divine wands or staves pretty effectively.
Any thoughts?
Is the intent that a 20th level arcane bloodline sorcerer can power wands and staves with divine spells by expending spell slots?
RAW definitely allows it. It's a capstone. I don't see any huge problems with allowing it as RAI.
Doubt it's intended, but definitely written. As Bronnwynn says though, a 20th level capstone...not going to be unbalancing. I think the biggest obstacle would be whether or not it feels right for the setting, and that's something that would be dependent on how separate the DM considers arcane and divine magic.