The Familiar of Zero and Fate/Grand Order Challenge

The challenge is this: All the human familiars: Gandálfr, Myozunitonirun aka Mjöðvitnir, Vindálfr, and Lífþrasir are Servants. This would definitely shake up the status quo and throw the canon events off the rails.

I actually plan to do this story when I am done with A Certain Great Fourth Holy Grail War and its sequel. I was inspired by Gabriel Blessing's fic The Hill of Swords and my version will have some similarities. I plan to have Louise Françoise Le Blanc de La Vallière summon Ritsuka Fujimaru (still deciding on male or female) as Gandálfr, King Joseph Gaul summon Semiramis as Mjöðvitnir, Pope Vittorio Serevare summon Jason as Vindálfr, and Tiffania summon Circe as Lífþrasir. Ritsuka would be a full Servant, summoned after they died and ascended to the Throne of Heroes for their many heroic deeds like fixing the Singularities and Lostbelts. They would be able to summon Servants of their own. I'm thinking of one for each class. Ritsuka's beloved wife Mash Kyrielight as Shielder is definite, and as a full Servant and no longer a Demi Servant, she would be at full power. I picked Semiramis because she looks somewhat similar to Sheffield and she is amoral and starved for love enough to willingly join Joseph. The Jason summoned will be much more mature and humble, like the one from the Atlantis Lostbelt, and he would likely use Astrapste Argo to summon the Argonauts, or maybe just Atalanta, Medea Lily, and Heracles. I picked Circe because of how everyone will react when they see an "elf" with wings and how she will interact with Tiffania and the others. Yeah, everyone will mistake Semiramis, Medea Lily, and Circe for elves because of their pointy ears.

Of course, anyone taking this challenge can pick their own Servants.