I know, I'm just saying that a feature that helps find things might inadvertantly make things TOO easy somehow, and needs to be considered carefully.
For example, if you simply had a basic "hot/cold" indicator, even if it's for an entire planet, I guarantee a ruin found on a planet the size of earth would be uncovered in a couple of hours - which reduces exploration to who can get to planet X first.
Yes features would be easier to find, but you compensate for that by having more procedurally placed features.
Instead of just 1-3 or so Alien ruins, you have 20,30, 40 or even more to find. Most of those could be in far worse states of repair than this one with say only a handful of obelisks still functional (instead of most of them working) so you would need to find the majority of the sites in order to put together the complete package.
Other features should be included as well, crashed alien space ships (of this species, not the 'Thargoids'), derelict space ships and space stations, the Ark ships should be findable. Where are the industrial sites, the mines, the factories, such an environmentally conscious race would surely place some industrial infrastructure on barren worlds where it can't pollute their planets?
Some of these features could add to the puzzle others could just be eye candy, but would be hard to distinguish from the true gems before arriving at them. You could also place the artefacts at different locations, the site we're scanning now conveniently has all the keys just lying around, why not have these in different places, some could be found at a crash site, others at an industrial site and so on. There's lots of ways of slowing things down and making it more than just who gets there first.
