Well, as I said, there is an established meaning of 4 in islam - the Universal Caliphate. Also, looking back at the artist’s prior production, it seems likely that the actual design parameters are from the campaign itself. Bruggink is just tour run of the mill logo guy, far as I can see nothing dramatically political.
5 is the pillars, obviously. It fits with finger smears, but no way O would have used that in an image consisting of extraordinary islamic symbolism. This is as close to a declaration of islamic takeover as you’re likely to get. Before they start arresting you.
Speaking of the five pillars of islam....
My own modest proposal:
How Islam—and the ever-present threat it poses to humanity—could be brought to an end in one, simple step.
http://www.amnation.com/vfr/archives/023326.html