[@Zadubadabu]Made another batch of edits. Would you really mind my idea with the Precursors?
At worst this could be a myth or that they are truly exterminated without barely a trace. I don't mind that.
Or have Precursor artifacts and such for occasional plot devices or a loot which many factions would wish to get.
Also just because they are the Precursors by Martian lore it doesn't mean we can't have other ancient races, neither it makes them the mightiest.
So hopefully there's nothing bad with them while potentially I give people another plot element to use.