Andrea from Save/Continue says,
"It’s sad we will never know what else became the heroes in Xenosaga’s universe outside of episode three’s ending. Asking for a fourth episode seems like an unrealistic request, but an HD remake is well within Bandai Namco’s capabilities. An impressive story that spans three games long, unedited and upscaled to be enjoyed on the consoles of this generation. It would be a fitting tribute to a game no one could ever truly forget."