Hmmm... Well, I'll just start off with it's been FUN!
So, I start a young world, only 100 years in from creation when I first embarked. So when she arrived on the 18th of Malachite in 101, little did I know the trouble that would follow... Who is "she?" Well, "she" has a few names, most recently known as: McVampy. Well, as you can imagine it wasn't long before the first dwarf was found completely drained of blood... After the second I had enough to go on to figure out which of my already numerous dwarfs was the culprit. Que the constructing special vault, etc etc etc. The vault gets finished in record time, I do the paperwork, get her tossed in, sealed the door, walled it up. Problem solved... Or so I thought...
No, it seems that almost immediately after sealing her in her nice new shiny engraved-smoothed-masterwork-outfitted-roometernal prison, I get wave after wave of 20+ migrants... Que the sound of a collapsing food system. So... I tried two options: 1. abandon and reclaim. This turned out to be a source of much worry, as after checking McVampy's prison... Well, she was gone (didn't know if she'd still be there or not, with there being no way out and all...). So, I loaded the backup and resumed with... Option 2: Free McVampy temporarily. Rely on her to repair tantrum-damage to my pillboxing system. Shoo all the other dwarfs outside, lock the door... and let her start cleaning up the mess.
And that folks, is what's going on in my fort...
edit: Oh, I should also mention it's been only 5 years since the original embark... And McVampy has absolutely ZERO skill outside of a smithy...
And also... Dwarf children are nasty when starving! One of the caravans got mauled by a throng of 'em... I expected lots of dead kids... not a dead caravan with dwarfs looting all the food they could find... (this was before I shut them out permanently).