Sieges will occur later in the game.
Occurance weight values:
Vanilla values:
(300, 0), (700, 2), (1400, 3), (2800, 5)
Mod values:
(300, 0), (700, 0), (1500, 2), (3000, 5)
After I had siege with 12 ppl with sniper rifles and 2 mortarts, while my colony had 4 ppl, 2 pistols and 200 chickens, I decided, that I don't want these so early. I can literally do nothing to them, and they will just shoot you to death.