Quote Originally Posted by Welf View Post
I don't think that is the problem, that is rather the symptom. More world building and the development of other characters isn't necessarily a bad thing.
Oh definitely, it was just not doing those things we all fell in love with in the story to begin with. Build all the worlds you want, so long as it is in service of an good story that you are also telling. Post- movie and book-completion JK Rowling/Pottermore is doing a good job of showcasing what pure worldbuilding, in absence of the story that it once served (and through which people fell in love with the world), can and cannot do.