I think there could have been more.
I'm a person who isn't into gameplay as much as I am story, and, well, the story itself was basically in one word: Lackluster. I feel as though there was a lot of potential that was there, but it just didn't happen. Same with the DLC. Yeah, sure, there was some times when I felt like I could enjoy the story somewhat, but then before I knew it, I predicted the entire plot.
One thing I hated about the story and something they shouldn't have done, was gone and make the story focus on Toshiro and Erina instead of the Phantom theives. It feels like the PT were just there to build grounds for new characters and to help develop them, which is something that they played out horribly because literally the only reason you would want to play a persona game for the story is to see the PT, not some strangers you just met.