Actually, regarding your multiple difficulty idea, there will be a `hard mode` for the second play through it seems like.
I don`t have a link to any scans, but the Famitsu and Dengeki articles from last week didn`t get put up for some reason (had some great info, revealed the other 3 gods and the egg dragon too).
The first run through seems to be designed to enjoy the story and puzzle aspect of the game, even goes as far to give you a few free level ups when you die from what it looks like. The second run is going to be more of a challenge, with `a slight change to the story` and `deeper access to the Ancient Cave`.
Like I said, sorry about the lack of scans to prove this, but it comes out in a few days anyways ^_^;;
Quote from mageormike
http://www.gamefaqs.com/boards/genmessa ... c=53612832