Looks neat and will definitely have a more upbeat ending...
Not really. It was boring as fuck since it had the most plodding pace imaginable. It also no reason to be labeled with the name "persona". With exception of a 5 second appearance of Igor and some hand-me-down character designs+an imitation of Soejima Shigenori's art style, it was unrecognizable as Persona related.
so it sounds like they tried to atleast go for the tone of P3.