I agree with this, there are only so many anecdotes to be told, once you have heard them you don't need to hear them again!
I much prefer the meatier retrospective docs and visual essays than the old EPK extras that we used to get. Like the ones on the House and Phantasm box sets which span the multiple discs, the Phenomena one and the piece by Kat Ellinger on the Bird with the Crystal Plumage disc.
We need a nice Jess Franco collection with a brilliant career spanning 5hr doc