How are you defining most of these as a selling point? Race/class combination shouldn't even be included since almost every expansion had that. Weapon types could turn out to be a huge flop.
And by "deeper character customization" is that suppose to mean sub races? If it's just more hairstyles, then that's a very low selling point as well.
Revamped world I like since the destroyed zones from the Cataclysm need to go, like asap.