Nobody will probably care, but that chapter that was supposed to be in the first book may have something to do with something I came across while (re)reading Goblet of Fire:
In Goblet of Fire, the spirits of the dead come out of Voldemorts wand in the order that he last killed them...right? So then if Harry's dad died before Harry's mom, why did he come out first? The order they came out was Cedric, Frank the groundkeeper, Bertha Jorkins, James Potter, then Lily. But the order should have been Cedric, Frank, Bertha, Lily, then James. Did James Potter let Voldemort kill his wife? This is pretty fishy...I don't think J.K. would slip up on something this big...