The sim trooper bases had stationary teleporters in a few of the facilities hardwired to other points on their respective maps for a few years. They were glitchy and unreliable so the Project quit employing them. The cubes you mentioned seem to be a step up but-

If he takes the basics of what we had and tries to throw in what he'd gotten from working with those cubes? This could be problem. Especially if he gets them working.