You need to note the distinct wording of my comment. I did not say "right now, all of the melees are not homogenous with great design directions!" As a matter of fact, a solid chunk of this thread and my comments is about how the recent design directions for Samurai, Black Mage, Monk, and Dragoon are weak. But I said they had Job identities and design directions that existed in the past, not right now. And I still believe in that.
Monk was the melee with all positionals. It had 6 positionals, one on each step of the combo, with each form having both a side and rear positional. In exchange for this, it had no raid buff and was less based around burst timing and more based around optimal GCD upkeep with the Greased Lightning and Twin Snakes buff. This was a design direction.
Samurai was a highly resource-management based job. In the past, Hagakure was a 40s cooldown that was DPS optimal to use at 3 Sen, even when compared to a Kaiten'd Midare Setsugekka. Balancing your Sen and Kenki to be able to Hagakure on cooldown, keep Higanbana up, Kaiten every Iaijutsu, and hit all your positionals (which gave you your Kenki in the past, not potency) was a unique resource-based job design that was clear and determinate.
Dragoon has of course changed a lot over time, but once upon a time Gierskogul spent Life of the Dragoon and Fang and Claw and Wheeling Thrusts returned 15 seconds to you so that you could Gierskogul more often. It had continuous upkeep, which they eventually transitioned to the Blood of the Dragon style design in Stormblood with eye phases that happened every 90s and kept buff phases variable. With Blood on a 90s timer, Litany on a 180s timer, and your personal buff on a 60s timer, Dragoon had incredibly varied, nuanced, and diverse buff phases.
These are design directions that existed, again, in the past. So why do they not exist anymore? That's what I'm getting at here. We don't disagree, you just misunderstood what I said. As for whether or not the jobs have IDENTITIES, these are all Final Fantasy kingpins that are consistently represented across lots of the games. They definitely have those, and they have had design directions in the past, so I fail to see why it's impossible they couldn't in the future.
If you don't mind my asking, when did you start playing? I don't ask from a gatekeepy perspective--I'm actually really curious, because I think it influences people's perception of the history of these jobs.