I like the free asteroid miner on researching asteroid mining. One would think that part of research would involve building a prototype to test technology, so getting one for free makes sense.
I'd like to have the Yor "uplift" a minor civ's robots to overthrow their creators. Thus creating a proxy that can harass the area, without being tied directly to the Yor. In my imagining, the uplifted robots don't even know the Yor were involved. They believe attacking organics was their own idea, and instinctively know to not contact the Yor. It's a hands off experiment.
