In fact, Andy Park spoke to CinemaBlend earlier this year about the challenges of creating designs for the Marvel Cinematic Universe and mentioned that designing The Dark Elves seen in Thor: The Dark World was one of the most significant challenges that he has faced so far as an artist for Marvel Studios.
In that regard, the Thor portion of the MCU is particularly notable.
If nothing else, this shows us how much the vision for a superhero movie can change over the course of its development.
Thor’s world is one of the most outlandish in the entire MCU, so it is clear that things can change quite a bit from the beginning of a project to the very end.