Any biome with huskifying clouds
...too much fun, tyvm. Passive reanimation is bad enough, what with the inevitability of an unslabbable trader ghost showing up, and the inability to close a coffin tightly...
Husked wildlife does at least always leave the map when it's time for the next batch of creatures. Also, unlike reanimating biomes, husks don't automatically make more of their own by attacking*. So far I haven't observed clouds appearing in the middle of the map, so that leaves a bit of wiggle room on 3x3 or larger sites. I'd rather just stick to colonising the caverns though. The horrible deaths you'll find down there are non-contagious... unless you managed to score a site that both reanimates and husks.
Undead creatures can also be husks, though I suspect based on the capitalisation and other things** that it only applies to Corpses -- that is, creatures that appear on the map already undead.
Oh, and the only metals on-site are gold and cassiterite. I was hoping for hematite as my deep metal for each biome, but nope.
*Coatings can transmit huskification, but coatings are not always left on a husked creature. One site I had was in a swamp, and the rain left the whole surface covered in husk dust, or whatever substance it was. This site has foul smoke, and forcing rain via DFHack doesn't leave any coverings washed onto on the ground. More study required, preferably with superzero temperatures.
**GCS corpses do not shoot webs, but GCS Corpses do. Wildlife corpses do not leave the map, but wildlife Corpses do. There are certainly some differences between animate dead and animat
ed dead.