Tagon, I think we should let Ennesby attempt to communicate with this sail-ship. It costs us nothing, and technologically they pose no threat to us.
So there's no downside. That's fine. Where's the up-side? What's in it for us?
Maybe they'll have something to barter, maybe not. Maybe we're just tipping the cosmic scales a bit in our favor by doing some good.
Do all bounty hunters have karma issues?
If you'd prefer, you're welcome to think of it as "grooming future informants."