^ I don't know who that is, but I kinda think it would have been neat to see how Buffy fans handled a recast.
Some shows, like Dr. Who, build-in ways to handle recasts in order to allow for longevity. Also for the sake of longevity, soap operas require viewers to accept occasional recasts and the fairly insane plot twists that must be dreamed up in order to explain why so-and-so now has a completely different face or is 10 years older than he was before (strangely, they also sometimes recast a character mid-scene, as with GH's Carly, without ever once addressing the issue).
I don't think that would have gone over very well on Buffy. We seem able to adapt to a complete format change (TV to comic book) in which we lose all of our actors, but I don't think we could ever accept a non-SMG live-action Buffy. I don't really know why I think that, but I do. I think a pre-season-3 recasting of a minor character like, say, Joyce or Harmony could have worked. I think Hank could have been recasted at any time. Willy could have been recasted. Characters who appear in heavy makeup, like Clem, could have been recasted. Non-human characters for whom an insane plot twist would have worked, like Glory, could have been recasted. I don't think any of the core 4 or their love interests could have been recasted, though. I think fans would have stopped watching if one of their favorites was no longer played by the original actor.