I know not a lot of people - especially on the guild - like this system, but have you considered the stats system? It ties in with what [@ArenaSnow] said about using tabletop mechanics. Granted, people around these parts dislike it because they feel like it takes away some of their creative liberties. Admittedly, I am on that side of the spectrum, but it's more about how most games I've been in had shitty stat systems. 

You seem like a very capable GM, though. I remember you ran a short-lived Avatar game that was full of really great ideas, so you certainly have it in you to do it justice. I would recommend researching up D&D stat systems just to get a grasp for them and then explore other options.