I find this theory very interesting, but
And I don't understand the meaning of the code behind the titles.
Spoiler:
Banquet of the Golden Witch
Alliance of the Golden Witch
Turn of the Golden Witch
Twilight of the Golden Witch
Legend of the Golden Witch
End of the Golden Witch
Requiem of the Golden Witch
Dawn of the Golden Witch
Battler D. of the Golden Witch ? What D stands for ?