I'd like a good death expansion. Enriching it, making it something other than a shocking tragedy.
I sort of like the idea of a non-death exit for sims. If a sim could turn into a tree and be planted forever, or turn to stone, not dead to mourn, but ever-present and timeless...
A less horrible end for sims who have had their time, unwanted children, the grandparents who have lost their storytelling lustre.
Maybe I just don't like to kill someone who represents 20 or 30 hours of development and care. If they could somehow be immortalised as something more personal than a gravestone, but less attention-grabbing than ghost, that would be ideal. I guess a vampire can hibernate for months and years. Maybe that's what I want: glorious storage!