I'm so glad that Goyer's script is getting a rewrite. While I don't know the extent of his process or what he actually contributed to the Batman films, I will say that every project I've seen of his that he either did solo, or had a massive hand in, I've disliked, if not hated.
Hopefully Warner makes this the best Superman movie ever. I cannot fathom how pissed I will be if this film fails like Green Lantern (which I didn't think was as bad as the critics made it out to be, but was still a bad film).