I think, after that 400th episode, they can safely put The Simpsons to bed now.It was, in a word, underwhelming.
Some pilots get picked up but are told they will be mid-season replacements because there's no room for them on the schedule at this time. Other MSRs come from shows that haven't been pitched yet, but will be in the fall.One of the dangers of announcing that a show has been cancelled is that the actors will then go an attach themselves to other projects (because they like to work - funny, that). So you basically make everyone on a show a "free agent" and it's damn near impossible to get them back together.