HarlequinDreams wrote:
Just out of curiosity, Pinstar, why don't ghost children count for the bloodline? They age and get old and die like any other Sim.
This has more to do with the theme and feel of the challenge than it does the gameplay mechanics. The idea is having a family with a large history of deceased relatives (once you get a few generations into the challenge). Ones that are honored in memory and in portraits but otherwise not interacted with, save for the few times the ghosts come out to haunt.
Having a family become ghosts, reproduce as ghosts and so forth just kinda sours the feeling of the challenge. Like the players who wish to use epic lifespans, you are free to play the Legacy Challenge with a slight tweak to use ghosts.