Hmm... I think that the way Morgan died was only natural. There was a piece of information that he had to tell Dresden, because his action was contrary to what Harry believed Morgan would do.
I saw it the other way. He confirmed Harry's suspicion that it wasn't personal, that Morgan was simply trying to terrify Harry into staying good. And that Morgan had come to respect Harry.
My problem with Morgan's death was that I expected Harry, after Morgan's compliment, to say something like "You just had to suck all the fun out of me getting to watch you die." Leaving Morgan to die with a smile on his face.
Dresden didn't have a normal banter going on with Morgan. The funny exchanges were generally based on Harry being a lippy bugger and Morgan getting angry about it. It was obvious, that they had trouble communicating, because even though their relationship did improve as they learn more about each other, there is no true bonding. Mutual respect, collegiality, but no bonding.
I miss Lash, but her death was well written and is actually a good character building plot device.
I think that Kim could have survived. She basically died because Harry was being a bit careless. Sure, she was an adult [ iirc ], but you don't let a rookie play around with some things even when they are adults, because despite being adults they are missing some understanding on the matter and may mess up.
If Kim was to be killed, we could have had her for at least 2-3 more books to have more impact. It would have been wonderful to see her interactions with Molly. Kim wasn't going to be a full blown wizard, because of power difference. But she could have been kind of an older sister character for Molly.
Particularly when you consider, the reason for this is she's the only one he couldn't hide his true self from. She basically fell in love with him in so much as that she sacrificed herself and performed the act of creation from it via Lash.
*Also part of why I consider the Reaper more likely to be Susan, her sacrifice should have been a similar act within her own soul.
The Reaper?
Edit:
I just realized: What if Kim Delaney is in Mirror Mirror... ? And Molly is not Fae ... Hmmmm.... I'm seeing some very nice stories coming from there
Storm Frond -> Fool Moon -> Grave -Peril -> Summer Night -> Death Masks -> Blood Rites -> Dead Beat -> Proven Guilty -> White Knight -> Small Favour -> Turn Coat -> Changes -> Ghost Story -> Cold Days -> Skin Game -> Peace Talks -> Mirror, Mirror -> fork and now we'll get all the books from the Mirror, Mirror universe
BANZAI!