This sounds awesome! I always wondered what Doom 1 would've been like with Tom's original vision. Generally I'm very interested in cut content for the Doom games, so I have always been super into anything regarding the Doom Bible. I really liked Doom Delta which is a mod that was heavily inspired by The Doom Bible, so I think I should really dig this, when it releases! I'm definitely excited to play Doom 1 like never before!
I'm scrolling through the thread, looking at the updates, seems to be moving along very well! The maps seem very solid and accurate. You guys really did your research with this one!