Just saw a clip of the Broadway Version with Bebe Neuwirth as Mortician (she does and Nathan Lane as Gomez, and it looks to be entertaining. But I don't know if it will work well as a musical. The most recent movies on the family were just ok, and even though they had some box office success, I think they failed, when compared to the original tv show.
Even though the comic strip was first, the actors in the 1960's tv series really gave the full definition of those characters, and all other future Gomez and Morticia's will be measured up to what John and Carolyn set as a standard. And that is a high standard to live up to. And that entire cast had such great chemistry.
I think Tim Burton will have quite a challenge to attempt to give us something better.