My current fort is an efficiency nightmare. I recruited most of the first (Real) wave due to being in very close proximity to goblins, but I then realised that most of the other migrants were skilled labourers. A year passes, and I work out that I have screwed myself over so hard by getting an uber industrial fortress running with only 4 haulers. Every single smelter, still, forge, ashery, masons shop, mechanic shop, carpenters shop, kitchen and clothier shop is *CLT*.
Another migrant wave arrives, and I DO THE SAME THING. For no discernable reason. I guess I didn't feel safe relying on 10 soldiers when I'm producing this much wealth.
Another year passes, everything is moving at the pace of a glacier, and the entire fort is bogged down in random crap, 500~ copper bars, 200 blue wafers, a billion plants which have not been stored in barrels (And the seeds. OH GOD THE SEEDS. Freaking military, dropping them everywhere), and millions of pieces of furniture.
Another migrant wave arrives, all of them are haulers, and the restoration process begins. Conservative estimates are 5 years (Factoring in another 2 migrant waves before the population cap is reached) before it re-establishes a semblance of efficiency.
tl;dr I underestimated my own ability to establish industry, and now I'm drowning in everything. I guess I'm stuck in some kind of production spiral.
Do not make the same mistake. Haulers are important, despite what people think. Skilled labour is good, but without the ever reliable guild of haulers, everything stagnates and players become very sad.