I maye be a bit late to the party, but I recently sprinted through the series on ANN.com. (I haven't played the game, so I have no doubt spoiled all manner of details from Persona 4 Golden; but it was worth it.)
Actually, I was surprised to note that Narukami Yu is voiced by Namikawa Daisuke; and he even has a "Velvet" Room he goes into, heh.
Actually, one thing I wonder about is if the animators will throw in any Easter egg references to any of the new content set for Golden, or to the run-up to Arena, in the upcoming True End special. (Or if there would be enough demand for an animated follow-up, based on either Arena or Persona x Detective.)
















