You could be right there.
What about we assemble a starting list of the archetypes we need and see what that looks like?
My initial thoughts are :
• OD&D Elf race
• 4e Assault Swordmage
• 4e Shielding Swordmage
• Jedi (Knight only? Consular? Sentinel?)
• 3.5e dusk blade
• The Witcher (?)
• Bladesinger (?)
• Githyanki Gish (?)
• Wuxia Sword Saint (?)
What would you add or subtract from that list?
This is where I am less useful as I have not played 1-4e. If you want to give me a description of each I'd be grateful.
Now, going by what I know and my guessing and separating them in order of styles I think:
Elf: Basically equal parts Wizard and Fighter? If I am correct I would say Bladesinger and EK has this one.
Assault Swordmage: Blinking, Teleporting, and Striking. Favorable to light/mage armor and, in turn, probably one-handed finesse weapons.
Shielding Swordmage: Heavy Armor, 2h weapon or 1h and shield, Shielding and/or Buffing spells, STR based.
Jedi: Unarmored Defense (Probably INT based for this class though I think The Force is more of a WIS ability), Weapon and open-hand or versatile weapon, cuts (and maybe deflects) projectiles that pass by. Probably a cool sword-throw ability. Mind-games with your opponent.
Duskblade: I have no idea, feels like a rogue/shadowmonk by the title which I think is definitely cool, but no idea if that's what it actually is.
Bladesinger: All I know is the actual subclass. I also know it was originally an elf-only subclass but that was just taken away. I assume from this that it was going for old-elf class and can probably also be dropped but if the goal is a more magical subclass to this half-caster I'd give it the Wizard's Arcane Recovery as-written to let it keep more slots but not buff its overall spell progression. If this was a subclass ability the other subclass abilities for that level would also have to be pretty badass to balance that.
Witcher: Stalk your magical enemy and go in for the kill after learning and preparing to fight it. The Ranger subclass of the Spellsword (not meant as derogatory, lots of subclasses have a subclass that is "other class without multiclassing" and I think that's great. I'd probably give some research or knowing about abberations ribbon in addition to any of their other abilities. I want to play this, it sounds fun.
Githyanki Gish: A psychic version of the spellsword. Should definitely be in for the sake of being a name maker of "Gish" but depending on how psychic is done I think maybe these should also incorporate the Jedi (I mean, githyanki have Mage Hand, Jump, and Telekinesis as natural abilities, that's totally Jedi.)
Sword Saint: I googled it and it recommended "Kensei" as the first result. I'm 50/50 on it but I'd need to know more. How would it differ from Monk Kensei or the Jedi if we're going with a more psychic definition of 'mystic'?
Arcane Archer: I know it's a fighter subclass but it seems like if this class existed before the Arcane Archer was finalized it would belong here so I added it.