I wonder if anyone else agrees with this
This incarnation of Superman should have the right to have his own trilogy, especially if Man of Steel turns out to be great, which I have no doubt it will, but a mash up movie like JL could screw it all up. We all saw with Iron Man 3, the fact that the Avengers were missing during most of the events is ridiculous, and now every "phase 2" movie has the burden of coming up with a stupid excuse for this, also you could tell that with IM3 they were holding back the large scale effects because they feared not being able to top The Avengers, instead, they made a dumb screwball action buddy comedy.
As good as Avengers was, it ruined Iron Man 3's chances of being good and epic, after the disaster that was Iron Man 2. They shouldn't let the same thing happen to Superman, let this character have his own arc, with all the potential great villains to explore, and then maybe move on to something else. But Superman at least deserves to have as great of a trilogy as Batman did.