Although this does sound interesting, and though I certainly would enjoy playing a part in this, I would like to ask a few things before I go on in thinking up a good character.

 - Are you going to take care in ensuring that (probably) not all our characters are going to be magical, or will you be encouraging magic and am I going to have to create a character who would have to be able to measure up alongside the other PC's, too?

 - Are our characters going to be generally aligned along with, against each other, or even in a more complicated situation like that? I'm impressed by the level of worldbuilding shown here, but how the plot would advance once we get started isn't at all clear.

 - I'm asking this a little ahead of time, but I'd also like knowing whether or not you're going to place mechanics or not behind things such as combat. Just curious, nothing I really need to know anytime soon.

Still, I'm interested.