Many of the preference groups now are very close to each other. This makes it difficult to see where sections start and end. This fix just includes updating the spacing to make the preference sections more readable.
It just looks like some simple python changes. I can try to do this if no other developer wants to.
The screenshot includes just one instance for reference. This issue could include looking over all of the user preferences areas to make sure spacing is consistent.
This seems reasonable, probably will also require some C code changes to make the user preferences window open a bit wider to handle the extra space.
@Brecht Van Lommel (brecht), I can see about handling the Python side of things for spacing.
I don't think the window needs to be made larger with this change. You already have to scroll with most of these panels (including the one in the screenshot). It will just add a little more scrolling to what is existing. I think just the Python changes would be sufficient.