Myrthos;
The difference here I think is that Divine Divinity was silly and redundant, while Ego Draconis sounds cool and mysterious. Even if its meaning is not immediately obvious (though draco/dragon is a no-brainer), I think the mystery would be a draw, not a turn-off, for the uninitiated.
If anything about the name is mentioned in future reviews, it will probably be in reference to the improved naming of the sequel. 'Cause there's no escaping the naming of the original.