After that same discussion on RPG.net, I also have been working on a Nephilim Redux and I too have strayed from the original to create something new
I'm still working on the system, but Past Lives have become more important than they have been in Nephilim. Also ditched the dual being thing...
It's too different from my original intent to really go into detail, but I found it funny that the same thread inspired similar project ideas. Once I am done, one could use the system and rules to play Nephilim, as well as other things. It'll be something that is very much about Occult Roleplaying in general, the fact that you'll be able to use it to play a Nephilim-like game is a by-product of what the game is turning out to be.