I love the idea of the "Lost Soul" type of Ghost in Ghostbusters. My all time favorite episode of The Real Ghostbusters (Dairy Farm) deals with ghosts in a very human emotional way and i am all for more of that in Ghostbusters.

So the idea of the Melody character and her connection with Phoebe is a great concept, however i also feel its poorly thought out and written and ultimately falls flat for a variety of reasons in the end!