Truthfully, I think the show as a whole has a short future ahead of it. How old is Matt Groening now and how long has he been milking this cow? Do you think he's, well, a bit tapped out himself by now? How many new RECURRING characters have been introduced in the show in the last 10 years? If you said none, you'd be correct. I don't recommend a spinoff enterprise - something the less-talented Family Guy team has been pursuing in recent years - but if The Simpsons wishes to stay around a few more years, they could do far less damage than introduce a few interesting new characters (including, oh, maybe bringing in a few new full time voice actors and some new writing blood) and then maybe - maybe! - the show could last another decade or so. Only that will keep this game going. Cause if not, I don't see it lasting another 18 months.