Any love for the Electromagnetic Scanner? You know, instead of a Tectonic Scanner, Thrusters or the whatnot, you can see every Progenitor Ruin on the map (and alien bones, satellites and settlements but it's the ruins you want) and possibly get free Affinity upgrades if you rush your Pioneer-enhanced explorers over there?
I use it. It not only shows the ruins, but gives you your position on the map, and a rough idea of where the landmasses are.
And every once and a while you get stupid lucky with affinity bumps. Current game on Soyuz = 4 (4!) affinity upgrades. Game is like over before it started. Plopped a city next to my nearest neighbor's capital and letting him smash himself against a handful of troops while I build up the rest of my empire.