The Shiva is worth playing. It's not as lush as some of the others. In terms of graphics and such, it's about on par with Legacy. In terms of story, it has a bit more branching than the Blackwell games. Rabbi Stone can die, or not, depending on your choices.
If you play, one small payoff you won't want to miss in the Kosher Edition is email from characters of other games in a rabbi's inbox.