It wasn't a vast improvement on the earlier film. Still very dull, morose, almost humourless. Nothing added seemed particularly special. Sometimes seemed like an exercise in Snyder just trying to create an iconic shot (the post battle team line-up shot is rubbish)
The boring Cyborg storyline is expanded...and is still boring
The expanded Wonder Woman/London siege scene is quite good, and a name-dropping scene near the end, which seemed to be created for fanboy "what if" speculation and debate was quite interesting.