. . . why is this not a thing?!
After spending the evening in the Desolation, getting more used to my Jackal, I really got annoyed with the sand portals, which tend to send you a completely random distance and often right into a pack of enemies. "Oh! Where the kitten am I? Who are these enemies shooting at me?! Is there another portal out of here?!!" Why?
Previous maps fixed this, HoT Nuhoc wallows show where each goes. LWs3 Magma tubes have a direction of travel. Yes, Jackal portals basically face in the general direction of its mate, but they might be up, down, they might be 30ft away or half a mile, there's zero consistency. These really need to be on the maps, with a little arrow pointing in the right direction.
I suspect that you guys know this, and that they aren't in already is because you wanted some amount of "mystery" to finding these things, and if so, fair enough, but at least make them unlockable somehow, so that once you travel through them once, they are visible on the map with arrows. I realize secondly that this would likely take slightly different tech than the current map elements, and might take a little time to implement, so spend that time if necessary. And if you don't believe it's worth the effort, or can't manage it within the first month or two, then kitten it, and just make them always visible, because being able to tell where each portal goes matters a whole lot more than the mystery.