I don't think a film would ever be made, and by some of our casting I don't think any size budget would cover it!
I like to see who imagines who could play certain characters though- it makes you think about how you imagined those characters whilst reading the books. I still like the idea of a teatime series though-it would run for years! And each episode would have to have a five minute story so far at the beginning!
Oh, that would be a job for Durnik, bless him, so that we don't forget him till his big scene!