Oh, uh, maybe? To be honest I didn't remember that Infiltrators can't see portals. I guess the idea could be expanded into an actual "spying" skill but that'd probably work best with higher level prerequisites and saved for a future Skills update...

Maybe something that functions more like how Remote Portal Creation was originally meant to? Something along the lines of "Open a portal to the current location of another Traveler, even if you have never seen the location and it is not the last location you portaled from."