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Boring Fortress

Cuts as much as possible while still having all the normal features of the game technically still exist. Great for testing mods that add things, since it gets a lot of clutter out of the way.

All creatures cut except:
Dwarves (natch)
Cats (for vermin control)
Wagon
Horses (as pack animals, to pull wagons, and for milk)
Sheep (for shearing and milk)
Mussels (lake/river/ocean fishing, plus shells)
Pond Turtles (pond fishing, also shells)
Cave Fish (cave fishing)
Cave Spiders/Brown Recluse Spiders (belowground/aboveground silk)
Honey Bees (for mead)
Flies (for annoyance)
Rocs (a megabeast)

All plants cut except:
Rope Reed, Prickle Berry, Blade Weed (aboveground fiber/booze, food/booze, and dye)
Pig Tail, Plump Helmet, Dimple Cup (belowground same)
Pine (coniferous forests), Oak (temperate broadleaf forests), Mahogany (tropical forests)
Fungiwood (belowground tree)

All soil/stones/materials cut except:
Loam, Clay, Sand
Sandstone, Granite, Basalt, Marble (one of each geological layer type)
Magnetite, Lignite (iron ore and coal to smelt it)
Rock Crystal (ubiquitous gem, plus enables crystal glass)
Iron and Steel

All entities cut except Mountain (dwarves)

Note that the game will still procedurally generate all kinds of werebeasts and necromancer experiments and titans and forgotten beasts and (spoilers) and soforth

I realize that the errorlog throws a bunch of mess at worldgen, not sure how to avoid this without lots of tedious cut tokens for graphics and reactions, if at all.