So my first DF2014 fort was going nicely. Settled in spring, migrants in summer, dwarven caravan in fall... But then a couple days into winter two necromancers show up. I've got 19 dwarves and only one with military skill, so I figure I'll batten the hatches and let the merchants take care of them.
Wrong. The invaders hang out on their side of the map and the merchants on theirs. The merchants weren't even leaving because some of them were freaked out by keas and were refusing to go pack up their stuff. We hang out all winter like this, in spring two of the merchants' horses give birth, and I finally forbid the depot to get them the hell out of there. I open the doors, the zombies are still bumming around, and I decide hey, I've got these cages now, maybe I can catch some zombies in cages. My mechanic goes to set up the trap near the horde, gets freaked out, drops the mechanism, and runs away. The necromancers leave sometime during summer but their zombies remains, it turns out the zombies will attack if I get close enough, they won't leave on their own, no one is coming to help because of the siege, and so next winter and six dead dwarves later I decide fuck it, I'm outta here.
Next fort starts in winter. Spring is uneventful, migrants in summer, then a couple days into autumn I get a kobold thief followed almost immediately by a squad of goblins. My dwarf numbers are almost exactly the same as my first fort. I bang my head against the keyboard and hope the dwarven caravan shows up and gets rid of them for me. But it is not to be; the game crashes mid-autumn and I call it a night. When I start up the LNP again I decide to turn off invaders because really, and the curtain rises on the first day of autumn. Right on schedule: kobold, goblins.
Has anyone else noticed this pattern of three seasons=invasion? These two forts were in completely different places on a medium map, from different civilizations, and were both mountain fortresses near the civ's other forts. I was under the impression that invasions were linked to fortress wealth, which, three seasons, uh, no. I was still digging out the less necessary living spaces in both of them, hospitals and expanded workshop and stockpile areas etc. Especially since the LNP invader toggle doesn't work anymore I suspect this has changed. Since they were both immediately three seasons in it seems like it would be hard-coded, but it seems like that would be a little much and also far too predictable. And then sending me an invasion before I've had a single caravan, thus possibly scaring it away, has the enormous potential to leave me A Bit Screwed.