But it would have been nice to see a couple minutes of Superman helping to rebuild the city. A short montage of him pulling survivors from the rubble, reuniting families, and cleaning the damage or lending a hand to reconstruction would have gone a long way to showing us the Superman we know--the one who spends most of his time helping people rather than just fighting crime.
I have no problem assuming that Superman did
help out, once he finally collected himself after the killing of Zod. And we saw plenty of him helping people out earlier in the movie, so I don't think we really needed further proof of that.
I think the bigger issue is just with the level of destruction itself. It didn't bother me nearly as much as it did others, but it does
raise some questions. And it make the shift in tone later on feel more than a little jarring.