Part of what made The Avengers film so great was the motley crew nature of them all being together. Whedon was able to dedicate time to character building in that regard. Is it overkill though to feature anymore similar head-butting in the sequels? I ask this because the "what if this guy fought that guy" is part of the geeking out aspect of what people saw in the first film ..... but to repeat it might be borderline unoriginal. Can you keep using the same recipe over and over again, especially when there's never any overt conclusion to the fights?