JLA: Act of God/YMMV


 * Esoteric Happy Ending: The story tries to tell us that a new generation of heroes is about, the problems with this are that there were likely millions of innocents killed due to people losing their powers, few Superheroes getting over their problems, and Kyle Rayner, ultimately, ends up killed due to psychotic obsession. This isn't getting into the fact that many tech-based supervillains keep their powers and abilities, one  doesn't make the world better.
 * Gary Stu: Again, Batman.
 * Strangled By the Red String: Superman and Wonder Woman, considering that Lois is pretty handily derailed in order to break up with Clark.
 * That said, both Wonder Woman and Superman undergo some fairly odd changes in behaviour and world view to come together in the way they did.
 * They Wasted a Perfectly Good Plot: The idea of an Elseworlds story involving heroes losing their powers is an interesting idea, the possibilities were not explored that well in this story due to a very confused Aesop, as well as heroes acting like brats. Another idea that would have worked fine is working together to find out what caused the Black Light and caused them to lose their powers.
 * The issue of depowering Earth's meta-humans is explored again in Justice Society of America: Axis of Evil, where it's played for extreme drama in a Bad Future. In JSA's case, the depowerment was due to some Applied Phlebotinum from Those Wacky Nazis, and just about all of the former metas do get to Take a Level In Badass at the story's climax (which is somewhat at odds with how most of them were portrayed in Act Of God).
 * Wangst: Superman, Green Lantern, and many other depowered heroes suffer from this.