I'm just curious as to what determines hostility on first contact. After I jumped to Delta Trianguli, I met a race of friendly squid people with a huge fleet of "Troll" class 950 ton something ships, along with a few other mixed ships. They suddenly vanished into the southern end of the system so I followed them and I found tons of wrecks of the previous ships. Then, out of the insane amounts of wrecks, 3 nuke-armed ships came and stomped my jump/scout ship flat in one volley. Many failed military vessel designs later, I had finally gotten a ship armed with 1. 4m km range lasers that is faster than they are, I then ran them down and stomped them flat. This random hostility surely can't be a coincidence, I found the hostiles in the same system as the squid men, and they took the boot straight to the friendly ships.
Also, I can't quite figure out why there were the "Patria" class something ships (hostiles, FYI) sitting in the middle of the wrecks. They had missiles, but they only seemed to fire on defenseless ships. I sent freighters + salvage ships to tear apart the wrecks and they got blown full of holes. I sent the military out there to curb stomp the enemy and they were never fired upon. I know they didn't run out of ammo, I recovered some kind of plasma missile from the wreck.