This is most likely answered somewhere already, sorry. But...
Basically I'm imagining the OPs like an AI, correct? They can only go as far as their programming, or mimicking can get them, but they can be used very easily for all sorts of things by the 4th Dimension STS, who would be like hackers. They can't feel empathy, they aren't creative...
So are they used for feeding STS as well? Because it seems like their emotions would be very shallow, not as much "sustenance" there.
Also, when we game-plan prior to incarnating, and are given options of different DNA matches, are these OPs? Because they are portals, so are they the portals we incarnate through? And if no soul chooses that body it is born as an OP?