Is like saying that a book with blank pages, no text in it, is more interesting than a book with text that you don't like ... Remove the theme and you will have a plain background.
Considering that, if there must be a graphic, that graphic needs to tile, then be consistent on different screen resolutions. This two things will make any "graphic" have limitations/implications:
- either becomes really crowded
- either appears like is a glitch (see the old diagonal lines background used before
- either is a plain color that will eventually make people cringe that needs more design
- or on different resolutions will looks small or big and not always in the center of the screen (when forcing a fixed position)
@Ste74 - we can remove the branding.png and replace it with a transparent, slightly textured background, and be done with it. Use only the white branding logo ...