I do find it odd that Edmund, Lucy, Susan, and Peter have far more importance than anyone else. I wonder if they were supposed to be a parallel of something else.
I thought they were going to get to the person who enters Narnia from another world at some point in The Horse and His Boy, but I suppose I should have given up on it, especially after about 40 pages.
Wow, definitely agree with BMW/GMW. I guess for Narnia, then you might just have to leave it up to whoever Lewis' heir is, they would, after all, retain the rights to the property. No one else could do it even if they wanted to.