The HD era has had the least fluid animation, and most glaring visual errors.
I agree that the animation is no longer fluid - I absolutely
adore the animation of the golden era. But, in terms of characters being off-model, it's quite a rarity these days, given the large reliance on digital methods of production. Particularly in comparison to the "glaring visual errors" of the early seasons.
For the record: I actually think little mistakes like this are part of the show's former charm.And we HAVE seen footage of the opening.
True, but current-era Simpsons openings are hardly representative of current-era Simpsons episodes. It's unfortunately what they seem to put most of their creativity towards these days.
Though I actually thought the brief footage we saw of the crossover's opening looked pretty fantastic, and it seemed to be the general consensus here.
Keep in mind I'm in no way defending the animation of current Simpsons (save from the openings, of course). It probably
will look just like all the other recent episodes of The Simpsons. I was merely pointing out that you made a comment specifically about animation in reference to a still image, which seemed puzzling to me.
It's almost like they are still against Futurama... and want to bury the crossover.
Haha. They're doing a pretty terrible job in this case, given that there are other episodes out there that have been "buried" far more effectively.
This one has been sidelined for a good two years now.