perfect sense, I can't believe I didn't even consider the hubs, completely eluted me, thanks the 7 v. 4 port USB hub does have merit, weighing heavily on the seven side.
but wait. Ive actually interfaced a USB 2.0 to a circuit (microcontroller type thing written in assembler and then the hex is burned onto a eeprom or flash IC) well I cant remember the code for the chip but are you pretty sure a 7 port hub doesn't require the resources of two USB devices, because there are two of the identical (or nearly) IC's each can "tetraforcate"
1 to 4 by supplying data to the chip to multiplex the signal. so the second chip can tap its input into one (1) output of the first chip (reducing it to 3 outputs, and supplying the second chip which has all 4 outputs. This accounts for the 4/1 :: 7/1 arrangement scheme, but i the second chip would require a USB resource, since the arrangements constraints seem to not allow for one chip control.
I HOPE THAT MAKES SENSE!
my reason for bringing this up is it wouldn't be that difficult (esp if you are right rather then me) to wire 4 ICs to draw their input from the four outs of the first chip, allowing for one device to control 4x4=16, and this would make the chips seem preferable to fan out than the routers, prewired with only 1 or 2 chips
hope that makes sense too.
Thanks for the first answer anyway!