Overall I didn't mind how LWW was done with one major exception. The thing that I minded the most in the whole film was the way the kids got into Narnia and I don't mean through the wardrobe. I didn't like at all the fact that in the film they were running from McReady because they'd done something wrong and didn't want to be caught. That was in direct opposition to the character of Peter. Then, in the extended edition, he was even slightly joking about it. They were supposed to be fleeing McReady because she had a tour going on in the house and they were not to be seen. This change did not give more depth to the characters, but rather it lessened the characters in my mind and sort of cheapened them...particularly Peter.
I did miss Aslan's joyful time with the girls after his resurection as well, but I could handle the way filmed it.
There was a complaint that there wasn't more in the way of Aslan and it was said that he was too expensive to have on too much. If this is the case, I'd rather see them put more funds into Aslan and not have things like the ice river scene that didn't happen in the book. If they stick to the book scenes first and then see what they need to add that is left over and still within the spirit of the characters and story, then fine. Adding the unnecessary and leaving out great bits is not something the fans will be ok with in future films.