I must say I am a bit disappointed that the sims don't have a permanent home/job, but its not a deal breaker. It does remove some of the realism. It would be cool if they changed this in the future and maybe even the ability to rename sims and have a way to quickly reference them.
I am not professional coder so I don't know the mechanics but if these sims keep track of happiness, money, and other details, how much harder would it be to keep track of a home or job? If their home/job gets bulldozed THEN they can look for a new one.