Some more:
Michael Jackson’s decision to star in one of the worst films of all time (‘The Wiz’), a role which was also generally his biggest failure by that time.
The removal of these additional few lines from the second verse of the ‘Smooth Criminal’ song (without these lines the song feels incomplete).
The casual, yellow-red jacket (with the ‘M’ letter on it) that he wore during the ‘Thriller’ performance in certain BAD Tour concerts.
His violent behaviour (smashing windows, destroying a car, etc) during the ‘black panther’ segment of his ‘Black Or White’ music video.
The gun shot at the end of the ‘D.S.’ song (which clearly implied a death wish).
Bringing an entire tank on stage for his ‘Earth Song’ performance (HIStory Tour).
All these sound effects, which were taken from arcade video games, in his ‘Heartbreaker’ song (from 03:48 onwards).
The replacement of ‘Shout’ with the yawn-inducing ‘You Are My Life’ song (on the ‘Invincible’ album), which was not only a bad decision but also an inexplicable decision as well.
In general I think an amazing choice for Michael would've been to include "We've Had Enough" instead of "Cry" on the Invincible album. "We've Had Enough" has a much stronger message and in my mind has way more punch to its instrumentals. Especially in the wake of the September 11th attacks in the U.S., "We've Had Enough" would've been a much more timely and well-heard message than "Cry". "Cry" has the feel of "You Are Not Alone" when the moment really called for another "Earth Song". I think that had MJ released "We've Had Enough" on Invincible it would've become a #1 hit in many countries. Obviously if he had included "We've Had Enough" he would have to either change the ending of or swap out "Privacy" (since that song takes its outro directly from "We've Had Enough").
The record company insisted on including ‘Cry’, and actually that song was one of the very first songs which was finished for the album.
‘Cry’ appeared to have big chart and commercial potential because R. Kelly was a guaranteed hit-maker at the time given some of his big hits that he wrote, such as ‘You Are Not Alone’ (1995), ‘I Believe I Can Fly’ (1996), ‘I'm Your Angel’ (1998).
It goes without saying that leaving out ‘We've Had Enough’ from the album was another bad decision.