I wonder if anyone has ever asked Nasu/ whoever's in charge of the anime as to why they chose male protag over female protag, other than the usual self-insert.
If GBF can have Djeeta as the "main" character (though it's non-canon and just for 1 episode, but at least it's better than just cameo/ no mention at all), then why can't the Fate series do the same?