Right now in the vanilla game you run into scavenger fleets on the frontier, I think. I don't think they actually salvage anything yet but it's a nice touch, nonetheless. It reminds you you're not the only one pursuing that course.
Unless this is already a thing and I'm simply unaware of it, right now, you are the only person interested in surveying the frontier and selling the data to the core worlds, even aesthetically. It'd be nice if you occasionally ran into expeditionary fleets full of Ventures in uncharted territory stealing your thunder.