Built a nice big field of slabs out the front of the fortress, each of them memorializing a goblin or kobold killed while attacking the fort. Sure enough, just as the final slab had been placed an Ettin came and knocked them all over.
An FB with deadly blood ("Stazu Pusurges the Rough Spittle") turned up in the first cavern. Sent in 3 macelords, figuring that they'd draw the least blood. They bashed it into submission but a macelord got blood on his boots. He ran to the well and cleaned himself, then went to sleep in a hospital bed with blisters on a page worth of body parts. After he got up after a night's sleep and went back to training I thought he might be alright, but he suffocated in the dining hall a few days later.
Also lost a dwarf to melancholy-induced thirst due to walking around with no trousers or shoes. It's a semi-regular occurrence in my fort, dwarves going without pants and/or only wearing a single shoe, especially with hunters, but the waterfall usually keeps them happy enough for me to notice and reset their equipment. There are plenty of shoes and trousers available, not in bins. I guess it might be related to using the "cleanowned" DFHack command regularly. Some bugs with refuse stockpiles now too, accepting bones when they shouldn't.
Finally the Queen arrived and she's a vampire. Not sure how to play this, I could lock her in her Royal Bedroom but I'm tempted to let her roam until she gets caught. The fort is getting kinda comfortable, half the dwarves are ecstatic, the necromancers all seem to be dead, and there's 2 legendary workers in most industries so the fort can afford to lose important dwarves. Time to appoint a sheriff and build a jail though!