No improvement at all.

Rating: 6/10 (26 March 2016)

Hold the fingers of your hand so as if you are holding an egg. This is the size of what was important in the movie. Then hold your arms wide open. This represents the length of the film. So, i am not saying that it was a total waste of time, but it sure is near to it. You should not make a multi million budget film which is a sequel and not improve it. I see no difference. Shaky cameras, falling buildings, wrecking cars, its the same.
Batman by Ben Affleck was the most tolerable thing for me, also Hans Zimmer's score was good but when it isn't. The film has so many characters and it failed to build everyone of them. There is just no sympathy for anyone of them in the heart of the audience. They tried to make it look tense but when the tension builds up they just crashed it face down.
Go watch this one time watch movie if you liked Man of Steel and hope that the upcoming follow up of it will be better.