[MarkSheppard]

Another reason for the overlarge "boxy" look may be signature reduction (they already have the barrel shrouds) designed to defeat different types of sensors -- if you have a cluttered tank, all the clashing antennas, boxes, etc provide nice high contrast aimpoints for automatic target tracking systems.

[early automatic optical tracking systems from the SA-2 onwards were responsible for the elimination of color insignia and markings from USAF aircraft over the decades]