Medusa

If we leave the mana aside, what do you think would be the relationships of the maters of Fate/Stay Night and Fate/Zero if they were summoners other servants?

For example:

Shirou and Gilgamesh, or Shirou and Medea, or Shirou and Mordred?

Rin and Diarmuid, Rin and Iskandar, or Rin and Medusa or Rin and Medea?

What do you think would be the relationships between those masters and servants, and what combinations do you want to see?

Greater grail war but some different servants different severvants,who wins and why? Also all same masters except vlad his master will be a human version of seig. Also I just picked characters Like.

Ruler:Asterea

Black faction:

Saber:Astolfo

Archer:Euryale

Lancer:Vlad III (normal vlad not extra)

Rider:Medusa

Caster:Anastasia(Non lostbelt)

Assasin:Stheno

Berserker:Frankenstein

Red Faction

Saber:Saber lily

Archer: Anatalnta

Lancer:Karna

Rider: Francis Drake

Caster: Hans Christian Anderson

Asssasin: Charlotte Corday

Berserker:Kiyohime

In fgo medusa was summoned two times into two different bodies and moreover the smaller one killed the bigger one.How could it be possible according to the lore?I thought sole of the hero can exist only as one copy,isn't it?If no,why not to summon 10 sabers?

If you know something,please prove your thoughts with wiki page link or something else.

In Nasu-verse continuity only Medusa became a monster, but what confused me in Fate/Grand Order was they were recognized as Goddesses and the most common way the myth is known, at least in real life is they all were monsters. So what I want to know is whether Magus Society knows the origins of myths better than the public or is the myth portrayed differently in Nasu-verse due to their different story?