Boulder Dash.
The Hank Scorpio Episode is one of my favourites because it was absurd. The Simpson family were mostly an observer to events oppose to the being the sole driver. They provided commentary to events without realising how crazy everything was. They left not because they realised how evil Homer's new employer was, but how miserable utopia was, in that they couldn't deal with their idealised worlds. Marge with her house work, Bart rendered impotent by the lack of a true challenging authority that appreciated his antics, Lisa rejected by the very environment she so very much cares for and Maggie losing the the tiny amount of autonomy that she has to a swing machine.
Homer is the only one happy. But only due to the writers need to reset at the end of each episode does he quit his perfect job to deal with old problems rather than solve the new, trivial ones. He could have stayed, but the show had to reset.
They do keep things around and the characters have evolved over the years, but most of the time, especially Homer it has been a negative thing. Homer isn't himself anymore, he is an actor who plays himself set to full retard. Everybody else has been marginalised to support his increased retardation. For every non-Homer episode, there are countless full blown Homer episodes