Do you think I could use the "Circumference System" for an adventure pack series set in Neveria? I've been working on a silly little three act story but I couldn't bring myself to making the mechanics of F.A.T.A.L. work.
Also I'd love to say that harpies are an amazing addition and a very fitting one at that. I've read a very similar take on the harpies on Reddit some years back, but for D&D, which I found too gritty for the setting. Here they are at home, and very much adding to that depraved mentality.
I've only gotten the game but I can tell there is a lot of awesome ideas here.