[quote=@Epsir]
[@1Charak2]
Container base stats, mostly. They're at around the same level of upwards deviation from base as Mr. Jekyll, and like him they have the skew of the final letter grades getting bumped around by skills. Only, instead of Mad Enhancement upping STR it's Jusqu'au upping END. Their array is pretty typical for an Assassin and we see Servants that are even more modern doing about the same. Granted, there are modern chads like Mata Hari who flex by taking E in all fields, but it goes to show there's not exactly a rule to follow. As for the skills, well, one of the p.skills is a replacement bargain for a c.skill and her rank in Charisma is basically a cosmetic that doesn't need to be there if it eases your bookkeeping. Assassin is written to follow pretty closely to the established curve of how weirdo spirits adapt into the Grail War's Servants while still making a run to do something different with the freedom fighter concept. When you cut out the skills which are not just descriptive of the Servant's characteristics they sit right beside their immediate cousins in the kinda wraith/kinda not category, Kojiro and Jack.
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Kojiro is barely a servant (and this is reflected by his kit his skills and his noble phantasms are approximations). Jack the Ripper on the other hand is a unique case due to the fact that she possesses NPs and unique characteristics from the GO, and is a stable existence able to be summoned by the grail to fill the class container she sorta falls outside standard wraith-classification anyway.

Even then, both of these are tied to 'individuals' while Kojiro themselves doesn't exist, anecdotes relating to Kojiro in relation to Miyamoto Musashi do. Even if its not the same person.

Jacks case is pretty awkward to explain but, given the nature of the Strange Fake Berserker whom is guranteed *not* the real Jack. As when they disguised as a unassuming young girl, they took the form of the assassin version of Jack, giving basis that even if 'multiple jack the rippers exist' Assassin Jack is a valid existence.

But to dial it back a bit to what I am getting at here. I'd suggest tying the concept of the Marianne to historical person, There are a lot of people from the revolution/birth of the republic that in of themselves qualify for servant status (Sanson) for instance. So I am certain you can figure out some revolutionary/republic figure that could be mixed with the concept of the Marianne. As the concept itself is a little broad to condense itself into a servant but it is a certainly feasible concept to embody if you can find an individual to give it that anchor.

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TLDR

Parameter explanation is otherwise fine with this in mind, For bookkeeping reasons though it'd probably be easier to give the Marianne concept to a living person. (be it a revolutionary or otherwise) as free floating concepts are a bit hard to work around afterall.

I'm not asking you to change your skills or what have you, I am merely asking that the Marianne is sort of amalgamated with another person whomever that be is up to you. But that will solve most of the issues. Even a minor person whom without being mixed with the Marianne would not be summonable. Would be feasible.