Since it shouldn't be plot-relevant going forward:
Where did the Red King come from in the first place to start the Red Court? Was he a wizard who transformed himself, or a Nevernever demon who "adapted" to the mortal world, or an actual god, or what?
Why did the Red King run away from Morgan, rather than just smashing him to the ground with his "overpowering will" and having him killed? Did Morgan have some counter to the "will" attack, or did that only work at Chichen Itza?