I'm happy that FES is being released, but also disappointed...since I just recently completed the original P3. Aigis's story should be interesting however, and hopefully give some answers on what exactly happens during the ending (which was a bit confusing before reading up on it).

Apparently you can carry over certain data to FES with an original P3 save, but the Persona in the compendium revert to their default stats and movesets, which kinda sucks alot.