Re: What "style" should the Dr. Strange movie be?
I voted other because basically you're going to need elements of all the other choices to make this work. No Marvel superhero movie can be w/o action and a sense of adventure. Those are foundational and a common denominator of all their films and Dr. Strange is no exception. But I agree with calling it "dark fantasy" as that seems most accurate to the unique factors/variables that Dr. Strange brings to the superhero movie table.
"Heroes and their consequences are why we have our current opportunities. . . . Every time one of these guys punches someone through a building our margins go up three percent." ~ Leland Owlsley