As I prefaced before making this argument, I don't actually believe it myself. I was simply working within the framework of @Ray's interpretation of Eva "subverting" Christianity, which implied that Heaven = Instrumentality. Playing the devil's advocate if you will, even while the basis of the interpretation that the argument is opposing is significantly flawed.
Probably should have been a bit more clear about that before derailing into a non-sensical ramble. Trust me, I am far too unfamiliar with the philosophies and texts that influence Eva's lore to ever make a claim as bold as, "X is framed as an equivalent to Y", while keeping a straight face. I had only heard about the all the Kabaalistic hoodoo voodoo, and its significance within Eva, once before this thread (someone actually brought it up on /a/ believe it or not). Gonna have to do some of my own legwork on this one.