Well, my first thought is to see if that command could bring all those ghosts back to their graves in the graveyard. You know, since installing ambitions, the ghosts tend to just walk out of the GY and grab a cab or something. Gotta see if that command is capable of turning the graveyard into a ghost-park again.
Some other stuff that I wanna test too include unfreezing massive amounts of sims that simultaneously go to a random community lot and just stand there until they die (tried to find the link to the topic about it, no luck), saving Sims from meteor-death (once a single meteor killed 7 Sims in my game, it ruined the entire neighborhood), some creepy stuff involving "resetting the grim reaper when the sim dies so that his corpse is still be there for making stories", and about 4 other stuff I was thinking of but forgot as I typed this post.
I may edit this later to add testing results or other ideas.