Such a shame that centering logos is still not supported by smf.
A long way to go to catch up with basic functions of other forums.
Is there a Mod in development for this or has the idea been abandoned altogether?
Great pity.
you can make that logo stand on it's head or do full gainers across the screen if you want... what theme and what is your obstacle for accomplishing this?
This would not be a mod... It would pretty much depend on your THEME... so don't go blaming and.
Blame whatever theme you chose. The default theme does not and will not support centering, because that's not the design.