In regard to ghosts: are we allowed to "help" a Sim become a ghost and then invite them back into the household before moving them out as long as it is done before they age up to adult?
We could choose to cycle through only two or three life states as long as we alternate the move out sequence, correct? What I mean is, we could do witch, vampire, alien (or any other combination) and just keep repeating those? In other words, there is no requirement to have all the life states represented.
For teen aspirations, they just need to be chosen, but not necessarily completed before beginning the cycle over again, right?
First of all, to correct what oshizu said, you can only get a ghost child from the wishing well, not a baby, but that's fine. The youngest age provided by the wishing well is a child, which is why you can only wish once per "try for baby" time.
You can't "help" a household member become a ghost, but if it happens, you can certainly make them a member of the household. I've not done that myself, so don't know what the process is. If it involves asking one to move in, we'll change the rule.
You can cycle through 2 or more life states if you want. We decided not to require that every life state available to the player was necessary.
@oshizu, you don't have to decide upon the life state at birth. Teens can be turned into vampires, and ghosts can "happen."