Marvel's short film "All Hail the King" was a response to Iron Man 3, according to director Shane Black.They were planning the short DURING the production of Iron Man 3:
and when asked if it was done in response to fans bytching about the mandarin twist:
Drew Pearce Talks 'All Hail The King', Runaways, The Real Mandarin & Marvel Future
And secondly, I'm saying nobody cares about the comic book version of Mandarin like that. He's not and never has been a popular villain. Like I said people just saw the film version that Kingsley was doing, were excited about it, then were pissed off about the twist.
*edit*
Another quote from the writer about how the short was planned during the films production:
Iron Man 3 writer explains those huge secrets in All Hail the King one-shot
"Marvel saw so many negative things they made a whole other movie just to apologize called [sic] Hail to the King," Black told Uproxx's Mike Ryan when the topic of negative online comments regarding Iron Man 3 came up. "In which they said, 'No, no, the Mandarin is still alive. That wasn't him. There's a real Mandarin." The only reason it was made, he added, was to apologize to angry fans.
Marvel didn't expect backlash to Iron Man 3's treatment of the character—in fact, the studio thought fans would "eat it up."
"It never occurred to us the Mandarin is as iconic to people as, say, the Joker in Batman," Black said. "[Fans] just wanted to see the magic rings shoot lasers."
Black also revealed there was an "early draft" of the film where the villain was a woman. The director was explicitly told by Marvel executives the villain could not be a woman "because, after consulting, [they] decided that toy won't sell as well it it's a female."
The director said that both Iron Man 3's Stéphanie Szostak and Rebecca Hall had their roles reduced from an early draft of the script. Because of "Marvel corporate"—and not Marvel Studios president Kevin Feige, Black stressed—the writers had to change the entire script. In the draft, the female character was essentially Guy Pearce's Killian character, and the major difference was the gender.
Iron Man's most recent appearance is in Captain America: Civil War, which has made close to $1 billion in revenue worldwide.
Breh. I LOVE the mandarin. His powers are unique. He has always been a fan fave. Ironman in general wasnt that popular before the mcu but Mandarin was always his arch nemesis and most notable villain. Personally i think disney bytched out because they didnt want to piss off the Chinese market. Then they started copping pleas when fanboys like me started raging.