That would have been okay.
Summarizing a great episode of television is like explaining a funny joke, it's better to just experience the thing firsthand. Which you can if you have access to FXX's The Simpsons World. I'll keep this brief.
After a conversation about the importance of family photos, the show speeds forward 30 years. The children are living the adult extensions of their childhoods. Maggie is the lead singer of a band, and she's about to give birth. Bart is divorced, and is spending the holidays with his two sons he rarely sees. Lisa is particularly successful as a businesswoman, but she's frustrated by her dull husband Milhouse and rebellious daughter, Zia.
The episode delivers the occasional dull joke, but the meat of the story connects. Plus, for tech savvy viewers, the episode is also a smart commentary on how we will interact with each other in a future spent wearing goggles that place us inside of virtual spaces.
What I'm saying is, if you are the sort of person that hasn't watched The Simpsonsbecause you believe it should have ended long ago, then you're in luck. Because that kind of sort of almost happened, and the result is everything a fan could hope for.