I can see where Zaene and Ayerc are coming from. Even if we end up with 20 advanced jobs, thats really only 10 grinds. to have all 20 advanced jobs completely leveled. At least thats the way I think I'm seeing it. And then switching advanced jobs is as easy as switching your talent points. If I am misinterpreting, I apologize. Here's another alternate suggestion that you can implement/consider (again, free of charge)

You're right, 50 is too high. I was only trying to account for the fact that 50 is already the cap. Let's change that to 30 and do something else with these other 20 levels later.

You begin leveling Gladiator, from level 1 to 30, using a Great Sword or a Sword and Shield. When you hit 30, you are now allowed to begin the specialization. You do the unlock quest for Dark Knight and the quest for Paladin. Now, every time you equip a Great Sword, your class is set as "Gladiator: Dark Knight", and every time you equip a Sword and Shield, your class becomes "Gladiator: Paladin". Of course, people would shorten the terms to Paladin and Dark Knight, but listed on the Status page, they would have the full name. Your Paladin and Dark Knight, as will be the case with all advanced jobs, are unlocked at level 30, and begin with all the abilities of your Gladiator, which is currently level 30.

Now, lets say you level up your Dark Knight to level 45, then decide you want to be a Paladin. Your Gladiator, along with your Dark Knight, are level 45. Your Paladin, however, is still down at level 30. You switch your class to "Gladiator: Paladin" and your level is pushed down to 30. But, because your Gladiator level is higher than 30, you gain a boost to your Paladin (Because, at this point, physical levels are gone, so your Gladiator level becomes a sort of Physical Level for your advanced Dark Knight and Paladin). As you gain levels with your Paladin, your Gladiator continues to climb, unlocking some abilities and traits you can use on either Paladin or Dark Knight. Let's say you get to level 45 with Paladin, then switch back to Dark Knight. You're now a 45 Dark Knight, but your Gladiator continued to climb on Paladin, so now you've got a couple more abilities and a maxed "Physical Level" type role from Gladiator of 50 or almost 50.

Also, to clarify, lets say you don't unlock Dark Knight, just Paladin. If you switch to a Great Sword, you become solely "Gladiator" and can continue to play that way. It would be a painful way to max Gladiator to 50, or whatever the level cap is at this point, which would boost your Dark Knight and Paladin when you start them, which would still be down at level 30.

For Zaene and Ayerc: Think of it this way. You CAN start by equipping your first Katana AND Great Katana at level 1, when SE releases that base/advanced job combination. When you hit 30 and unlock the advanced classes, you've got 2 jobs at level 30, both of which you've played, enjoyed, gotten the full effect of, while only really have to completely grind once, because all your abilities and traits are that of a level 30 "Ronin" type character, with maybe one trait that allows shows your specialization so far. You unlock both and you essentially have 2 identical jobs ready to be leveled, sharing a "physical level".

Again, use anything you wish Kuro, and I will always say I deeply appreciate what you're doing! Keep it up!