Casting of main kid characters

[whizbee2000]

I'm relatively new to this group, so maybe this has been addressed 
before....but I'm really hoping they don't change the casting after 
GOF to new characters. It just wouldn't be the same. I don't see what 
the objection is to the kid's getting older. Basically, they're the 
same ages as they are in the book. I can't imagine someone else 
playing Dan, Rupert or Emma's roles. Also, I can't imagine anyone 
other than Rickman playing Snape. I CAN'T WAIT for POA, the boggart 
scene and the freak out scene in the Shrieking shack by Snape and 
when they get back to Hogwarts. Rickman will be soooo delightful to 
watch!!!!