When I was asked to kill a target by Astrid (when you get kidnapped after sleeping in a bed), I was certain that killing Astrid wouldn't be possible since she obviously was important to the Dark Brotherhood quests, and important characters are invincible in this game. I did what she asked for, and was later told that I could join the Dark Brotherhood (even though I don't want to do so on that character).
However, I later found out that it was in fact possible to kill Astrid, so I obviously regretted that I didn't do so. I talked to some of my friends about this, and they seemed to be in the same boat.
My request: Give the players a second chance of destroying the Dark Brotherhood. I mean, your character knows the password to their hideout, and the quest is available if you just kill Astrid, so why not make it possible to kill them even if you do as Astrid asks?
And also: Why can't we destroy the Thieves Guild? I mean, there is a guy in the house of the Riften jarl who says something in line with "we should just gather some men and storm the place", so why can't we just do so? And if we'll be able to destroy the thieves guild, I want to be able to destroy them even if you have already done Brynjolf's dirty-work.



Anyone who has tried to track down an NPC on the road knows that NPC travel times are a strange thing. It's possible he arrives and Babette goes with him to Dawnstar. (I'd like to believe she's kept alive, er, undead for more than just the whole "kids don't die in Skyrim" thing.) We don't know where Babette is while the others are getting killed. 