Yes, it should work for a family friendly BP replacement. The Ghostbusters games have scenarios which can either be played as one-offs or part of a specific campaign with 4 linked scenarios. In general GBs plays faster than BP, but I don't feel the components or game mechanics are as good. These may be improved in the Ghostbusters sequel, however. Difficulty is probably pretty comparable. I've actually found several of the GB scenarios to be quite challenging.