Take a famous beloved albeit weird family from a cartoon / TV series / movie and turn it into a musical. It has such huge potential to be funny and entertaining. Well, The Addams Family musical was entertaining and sometimes funny, but it felt like a normal family doing funny creepy things. Rather than a weird family doing what they think is normal, making it funny and creepy. Which is what the Addams Family should be about.
So what do I like about the musical? The opening song was a fun one - with catchy finger snapping tunes - making use of the opening song from the original TV series. Which says something about the musical when the best song is a reproduction of the original song.