For the average user: If you own the game legally, the v1.001-P2P files can serve as a that removes the need for background client processes, potentially boosting FPS by 5-7%. If you do not own the game, remember that the modding community for Rebirth is thriving—and many of those mods (like the "Classic Camera" mod) are only compatible with the v1.001 executable.
: Improved overall game stability to prevent crashes. FINAL FANTASY VII REBIRTH v1.001-P2P