I'm actually concerned about that. Our corporate overlords have hit upon a winning formula, and have gone into full afterburner. Problem is that it risks burning out the non-fanbase audience, and if that happens, superheroes will suddenly become not-cool, and our golden age of superhero-fantasy-scifi will come to an abrupt halt.
Seriously there is no way I'll be able to keep up with this pace of movies. I literally can't afford it. At AoU I told the girl at the concession that I would have to take out a second mortgage to pay for the refreshments, and she just nodded.