Please do not lock Jobs to the Weapon Class that unlocks them.

[BloodLotus]

And all those are are special names to say "Sword User" Gladiators name in Japanese litterally means "Sword User" it isn't "Gladiator" in japanese. Its the word for "Sword" the word for "Art" and the Word for "Professional" all stuffed together.

Its not some special class like you see in Wow. Where a "Death Knight" is a collection of specific skills and weapon choices and talent trees that strictly define yourself.

It litterally means "I use a sword."

It doesn't define your role in combat, it doesn't define anything but what weapon you use and how your stats are reflected.

You're changing the point.

The word history means nothing at all.

In FFXIV when you equip a sword you become the Gladiator Class, it even says so in the chat log.

You're correct, it doesn't define your role in combat, the Job you unlock will.