Im not as well versed on the Marvel Universe as I am DC, but surely, there could have been a better villain than Loki? Essentially, the main worry in Avengers was the Chitauri invasion force; without them, Loki would have gone down quicker than a sack of potatoes, and because they were essentially a faceless mass of inter-dimensional henchmen, they were essentially a plot device, as opposed to a story element. Story wise, Loki was the antagonist, and I couldnt help but feel that Whedon could have chosen better. Were not sure yet who or what the source of antagonism will be in the Justice League movie, but Will Beall certainly has his pick. Youve got Darkseid (whos one of my personal favourites), a galactic God whose power matches (maybe even exceeds) Supermans; Lex Luthor, another villain whos already established in our consciousness; Ras al Ghul, again, already established; or maybe even Doomsday, the monster that essentially kills Superman. Again, were not certain yet which villain well be looking at, but in my honest opinion, it wouldnt be difficult to pick one whos better than Loki, and if Warner Bros. are successful here, we could be looking at one more reason the Justice League movie comes out on top.