Lord Shadow
General
Both the lifeform scanner and continental surveyor are pretty good for planning purposes and situational awareness. The former's particularly useful if you're going to be leading an offensive campaign against the aliens, whereas the latter comes in handy to gauge how much room you have to expand and how much of a threat arriving factions are to said, ahem, lebensraum. Also for exploration purposes, since you'd know exactly where to best send explorers (or colonists!) across the planet's surface (i.e. deserted islands, not yet inhabited nearby continents, etc.).