Honestly, the list of possible weapons is endless.
All that matters is how they find ways to implement them in game.
For example, you forgot :
- the geomancer's bell,
- the crossbow,
- dices (yes I want a gambler job, I don't mind if it is limited),
- puppets :P
- FF9's Zidane weapon (though it is quite similar to the Judge's dual weapon I guess)
- nunchaku (although maybe we can count this in your polearm category)
- more ridiculous/unexpected things. (nobody saw Sage coming, though I guess your "Reflector" category can fit in there)
Weapon archetypes barely matters really...
And I still think a second gunner job would make sense, considering how MCH is focusing more and more on his tools/machines.
Though, if corsair happens, I would personally prefer having a 'double pistols class' to be fair. That's what we see from Merlwyb, so...