Ok we're getting into Avatar territory here...Marvel has NO PLACE at Animal Kingdom, let's not start deluding ourselves. Just because it's happening in Epcot doesn't mean it should happen in every park.
I joined this forum railing against Avatar being added to Animal Kingdom for two reasons: 1) Replacing Beastly Kingdomme (which is one of the largest tragedies of my Disney Parks fandom) and 2) Adding an outside IP about fictional aliens to this type of park. I'm not going to debate that again, because astonishingly it seemed more people were okay with it than not.
However, Dr. Strange in Animal Kingdom...I don't even know what to say. It sounds exactly like something Disney WOULD do right now, and now I'm worried you all might be on to something. I'm sure there is some Animal Kingdom purist out there that can put some better words to my nausea about this possibility. I would never have believed Avatar in AK was possible fifteen years ago, and I never really considered Marvel as a feasible option there.
Tying this all back to the topic, unfortunately, I do see something like this being announced at D23.