Because some enjoy the system they are white knights? Does that make you a troll for complaining about a system in a game you play? Just because some dont agree with you doesnt mean they just blindly defend the game.
It really can go any way where DRK fits in. On a FF nostalgic side, Paladin and Dark Knight have always been a ying-yang of each other, and would make a nice story (lore wise) of the two. Like I said, the practicality of the two being within the same class has to be judged by the concepts of the GLD in 2.0. If we went by how 1.xx's system is set up, then DRK would be most logical in MRD, or even kind of LNC.
Or maybe they won't even release DRK until a brand new class comes in. That is always a strong possibility, lol.
Trouble with FF games is you dont want to bang the golden formula too much (there is an obvious expectation of say a Dragoon, make a dragoon that cant jump you will be burnt before the patcher finishes).
I assume you are talking Dark Knight like from WoW? Yeah but no... lol (Tanking Dark Knight)
I like it because it reminds me of past FFs, plus it allows for more combinations for jobs. For now, each class has one job to go into, it will change soon. Also, no reason to abolish something that there is nothing wrong with.
Strip your mind of the old FFXIV for a minute. I'm not talking about Gladiator as you know it. Gladiator would have skills that would be useful for both jobs and when you change to either job, you gain skills that make you completely different (and opposite) from the other. Opposite meaning, one is a tank (defense) and one is a damage dealer (offense).