So, realizing that some space needed to be filled in, I went to eBay and dropped some cash on some extra Terror Drome computer consoles, as well as a Tactical Battle Platform computer. They were actually less expensive than I thought they might be, but the only catch is the Terror Drome computers especially needed to be filled in.
I used some common backpacks for "Tech Detail" (trademark and copyright joemichael70) and then went over them all with paint.
As a last step, I built up the TTBP computer with insulation foam, then got glued them all in place.
Also, as recommended by drbindy, I started building up a second elevated walkway into the compound.
You can also see that I built some more wall monitors using foamcore, black/silver dry brush, and some print outs from online sources. Also grabbed a computer screen template from Build-A-Rama:
http://www.build-a-rama.com/1_18/18BAR34.shtmlI used some PVC pipes from Home Depot around the wrapping paper rolls in the corners, too, to try and hide the messy cardboard edges.
Lastly, I also picked up some super cheap Cobra logo t-shirts and cut them up for some nicely hanging flags for the blank walls.