iOS 7 features the status bar within applications. I feel that a black status bar would look better and it would be easier to read the information. what do you think? A integrated status bar or a status bar apart from the design?
It really depends on how well it's integrated. In iOS 6 I thought that the tinted statusbar was pretty hideous and when I jailbroke I immediately got a tweak that turned it black always. However, the iOS 7 statusbar integration is excellent and IMO makes the statusbar even less noticeable than the all black version.
I think the status bar looks best in OS X and I think it should've been brought over. It's very similar to the dock with its translucency, but the text is always black and it has a small drop shadow that allows it to work nicely with both light and dark wallpapers.