@Rhin
> Remember how originally, servants power level was related to their fame, and they were fighting in their home country?
Servant's Power level has never been directly dependent on fame alone, though, and fame and the home country bonus was always described as a power boost rather than the main source of strength. Even in F/SN's explanation a large part of power also included Mystery and the relative power of the Hero in life to his peers.
> Remember how divine spirits COULD NOT be servants, because they couldn't fit in the classes oh the HGW?
I'm fairly certain this rule still stands outside of FGO, which explicitly does not use the HGW summoning system in its canon (and even then has multiple restrictions for summoning Divine Spirits, usually involving possession of a mortal to allow manifestation outside of weaker minor heroic spirits). At the least, I can't think of another Fate series that uses Divine Spirits summoned directly as part of a HGW off the top of my head.
> Remember how only actual legends could be servants, and not an amalgamation of fake stories or made up characters? Holmes and nursery rhyme say hi.
This never held even in F/SN though. Kojirou was NOT the actual Sasaki Kojirou from the legend, and was in fact a different nameless spirit who fit the criteria of the "legendary swordsman Sasaki Kojirou". He technically was not a Servant under the Grail itself, but that just shows that it's possible for Servants to be summoned outside of the HGW system. Neither Holmes (summoned not using the HGW system but the FGO summoning system) nor Nursery Rhyme (summoned by the Mooncell) are also part of the HGW system so the point stands. Besides, you call Holmes a "made up character" but that isn't necessarily true in the FGO canon, which has King Arthur and all his Knights as canonically having existed in history when in real life nearly all of them were "made up" for a story. Fate's history is different and includes many legendary, mythological, and fictional characters as having existed in history when they never did in real life. Nursery Rhyme existing outside of the Mooncell is a bit of a stretch, though she's hardly the only "conceptual spirit" in the series at this point either.
In all honesty, you do hold a fair point that Fate does go outside its own rules a lot, but most of the time there IS an explanation, and it's usually done to allow interesting new characters and stories rather than just because the rules were "forgotten" though I'm sure at least of the time they are.
And in all fairness most of the separate Fate series DO happen in alternate universes/timelines where it isn't a huge stretch to imagine some differences in the workings of the world.
