2nd Hit Video Anomalies: Sloppiness, Miscommunication or Intentional?

I think the hypothesis that the 2nd hit videos are fake is fairly well supported at this point, primarily because there are a number of errors between the videos and anomalies within videos-- conflicting plane paths and malformed plane images are the most striking examples of these "mistakes". Other people like Webfairy believe that the 2nd plane images simply LOOK cartoonish and that the Ghostplane footage of the plane sliding into the tower seals the deal that the images are "cartoons". Then there are also scientific reasons for believing the 2nd hit footage is faked (such that fragile aluminum wings should not bust through 13/16 inch steel box columns, that a plane should slow and visibly crumple upon impacting a steel and concrete building and that tail sections can't magically disappear upon hitting a steel wall).

In any case, the big question is-- why are there so many "mistakes" in the videos? After all, if they had done a better job aligning plane paths and conforming to a standard model of the plane, then people like me might never have completely caught on to their scam.

There are three basic explanations for the "mistakes":
1) the animators were just sloppy in their animation, perhaps from rushing to get the videos on air
2) the animators worked in different groups (after all, they had a LOT of videos to make from many different angles) and didn't coordinate very well about the exact plane path and what the plane should look like
3) the animators left these "mistakes" as purposeful clues to what they had done-- as a tip off to people willing to look carefully at the evidence or as deliberate misinfo (i.e. the pod).

I suspect the answer is a combination of all three. The "pod" is too obvious to be a simple mistake and was meant to be probably deliberate misinfo, but other anomalies are probably real mistakes, either from sloppiness or miscommunication.