While some of the stuff for the Hyperborea rpg is shelfed for a day or so with the holiday we've been discussing among ourselves the revamped Hostile rpg and the New England Boi's campaign. And the fact is that any issues with Xeno life forms is going to be super rare. And this goes hand in hand with the explaination of the Fermi paradox in our own universe.
If we're looking into Hostile's Explorers title then we could well have a party of explorers who run into more then a few planets were the aliens have seemingly abandoned the planet or planetary system. But there could incredible technologies left behind by these civilations. And there in is both the value & the danger.
Exoplanets are no different, they may also harbor far more A.I. relics then previously thought. The aliens that we've been harboring for may actually have been wiped out by left over A.I. god things & thier relics. This leaves far more on the table then previously thought. Would we as PC's even remotely recognize an alien battle field and its left over alien weaponry or their effects. There may be fare more going on a wastland style planet then we were previously expecting. What the Hell I'm I talking about here?! The fact that some of the xeno life forms in the Hostile setting book may well be bio weapons but would we even recognize those??! And would we even known an alien dungeon if our PC's blundered into it.