I may be in the minority, but I think it would be nice if the game took place over a few days instead of all in one night. They could maybe throw in a couple of day sequences where you have some mission to accomplish as Bruce Wayne or Matches Malone. These could be used to flesh out the narrative as well as adding life to the city by showing its population occasionally.
I've thought that too. I'd love to see this city during the day, and it might be fun to play a couple missions as Bruce Wayne trying to investigate things.