One of the most interesting things about the Nexus 5 leak - bezel size
While I don't have any pictures, but if the leaks are true, the Nexus 5 will have a bigger screen in a smaller body.
Display size - 119.4mm (4.7")
Device length - 133.9mm
Device width - 68.7mm
Display size - 126mm (4.96")
Device length - 131.9mm
Device width - 68.2mm
The problem is I'm not sure how comparable display sizes are if the aspect ratios are different. Nexus 4 is not quite 16:10 @ 1280x768...if the Nexus 5 is a 16:9 panel (LG is producing a 5" 1920x1080 panel for Q3), then the side bezels might not be as razor-thin as you'd expect even though the width is smaller and the display is bigger. If that's the case, I would imagine the display will look more elongated than "bigger," but it will definitely mean less chin bezel based on the data.
But at the very least, we know that the overall device size is smaller and that's what really matters. People hate big phones not necessarily because the screen size is too big, but because the big screen + the bezel makes the overall device size too unwieldy. For example, the iPhone 4s has a 3.5" screen but overall device size is closer to 4.5". It would feel just as small in hand if it had a 4.3" screen, right? I think with little bezel and onscreen buttons, it's not going to feel huge at all.