Greetings,
Since the launch of FFXIV, my main class has always been Gladiator. Since I love the PLD, I was quite happy when the job was introduced. By I always hoped for a second job to be given to GLA, and, obviously, a DPS one. I'll use DRK as an example.
Thinking about it, I imagined how GLA could be changed to make it viable as a base for a DRK. What surprised me is how little change would be needed for it to work quite well (In my opinion)
The point is basically to transfer some GLA skills to PLD, namely Rampart and Sentinel, since they're only good for tanking, and transfer two PLD skills to GLA: the two Oath.
They could be renamed "Shield Stance" and "Sword Stance" if the "oath" term is too pendatic for GLA.
But, Sword Stance needed some changes, since, at low-level, it would be the main source of DRK's DPS. It could be the exact opposite of Shield Stance : More damage dealt, more damage received and less enmity.
Here's a chart to compare the existing GLA/PLD and a revamped one :
Gladiator
Existing
lvl1 Fast Blade
lvl2 Rampart
lvl4 Savage Blade
lvl6 Fight or Flight
lvl8 Flash
lvl10 Convalescence
lvl12 Riot Blade
lvl15 Shield Lob
lvl18 Shield Bash
lvl22 Provoke
lvl26 Rage Of Halone
lvl30 Shield Swipe
lvl34 Awareness
lvl38 Sentinel
lvl42 Tempered Will
lvl46 Bulwark
lvl50 Circle Of Scorn
Revamped
lvl1 Fast Blade
lvl2 Shield Stance
lvl4 Savage Blade
lvl6 Fight or Flight
lvl8 Flash
lvl10 Sword Stance
lvl12 Riot Blade
lvl15 Lob
lvl18 Bash
lvl22 Provoke
lvl26 Rage Of Halone
lvl30 Swipe
lvl34 Convalescence
lvl38 Awareness
lvl42 Tempered Will
lvl46 Bulwark
lvl50 Circle Of Scorn
As for PLD:
Existing
30 Sword Oath
35 Cover
40 Shield Oath
45 Spirits Within
50 Hallowed Ground
Revamped
30 Rampart
35 Cover
40 Sentinel
45 Spirits Within
50 Hallowed Ground
All skills based on "Shield" (Lob, Bash, Swipe) could be used with a two-handed sword, and we could replace Enhanced Rampart and Enhanced Sentinel by Enhanced Shield Stance and Enhanced Sword Stance (10% effect at start to 20% effect), although these traits would be learned sooner that Enhanced Sentinel.
As for stats, GLA would have higher Strength and less Vitality, since it would be designed around having Shied Stance to tank even at low-level.
PLD could remain the same.