The project was originally meant to be an online multiplayer game.
The revival opted against using David, Kintoki, Benkei, and George, introducing new Servants instead.
Jeanne was going to be the Final Boss of the scrapped online game project.
Mordred's gender in Fate/stay night was never explicitly stated, but most fans assumed that Mordred would be male like in the original Arthurian legend. At firs Nasu seemed to have decided that Mordred would be male, but apparently having two male characters look feminine, the other being Astolfo, was too much.