>>101543031I understand the whole less is more thin, and why some would feel that its better to keep the show short. But in the case of Mission Hill, the creators actually planned out the development of the series and characters throughout multiple seasons. The plan was for Andy to eventually become a successful cartoonist like Matt Greoning.
Besides, just imagine if The Simpsons or Futurama had been cancelled after one season. You would have missed out on a lot of classic episodes. Granted, both those shows (especially Simpsons) ran too long, but most would agree the best stuff came after their respective first seasons.