I rather like the spacing. If more people think otherwise then I will make the change.
The point of a GUI is not only to look good, but also be usable, find something supplementary to a smaller space, like a more defined border, not to ruin the looks of it, but also make it usable.
It's annoying to have a maximum of 14 servers on my screen when I am mid-way in the list, not to mention all the scrolling.
Sure, it does look nice, but based on the height of a server line, it should be more compact.