I'm worried that:
Chris Weitz will try to make it funny.
The new characters will be badly played.
They'll do something stupid with Edward in Bella's head.
I'm not worried about the wolves, though. Trained wolf-hybrids would probably be available, and they could make them seem bigger the same way the hobbits and humans were taken care of in LOTR. See here
for more info.
Private Aubrey Tobin in Jasper's Confederate Army.
You have to see this
Beep... Beep... Beep... Maira is going out of order... Bee- back eventually...