At the moment the logo's almost look out of place ie too far to the right (as you know you get a lot of blank bluespace to the left of the logo's) so for me center would be an improvement, but only because it would close down on the blank space.
Getting rid of the blank space would be the biggest improvement - not sure about having the logo + callsign - it may end up being too cluttered, hard to say without having seen it...