So, as most of us Legacy players will recall, WAR was a hell of a lot more fun in 1.23 and this was largely due to its dual nature - You could either tank or dps depending on the gear you had and what skills you took.
I'm not completely against the changes in ARR (though I'm not a fan of the system as a whole) however I do think a few things could be different to better distinguish WAR from PLD and make it a more exciting Job to play.
So the first obvious thing is to allow MRD/WAR to wear offensive gear again. In 1.23, PLD WAR & DRG could all equip the offensive Darklight Armor, with the Heavy variant being reserved for just WAR & PLD. Now it's LNC/DRG only, and that blows. It was fun being a high HP dps in 1.23, and it strikes me as a bit silly that a Job that wields such massive great axes can't double as a dps role, so that's step 1 (Allagan gear too of course).
The other (bigger) change is to rework Unchained. In its current form it simply allows you to deal full damage again for 20 seconds. I'd much rather it be changed to an alternate stance skill similar to Defiance, but with DPS buffs instead of tanking. Instead of gaining wrath with each attack as you do with Defiance, in this new form it gradually builds up over time/as you attack and grants bonus effects to your weaponskills based on how much wrath you have. Enmity is also lowered rather than increased.
Finally to make this work properly, certain skills would have to function differently in this new offensive mode, all your weaponskills that normally grant increased enmity had reduced instead as that would be counter-productive.
I haven't really worked out all the kinks, but this is just a basic concept I thought of the other day to spice things up a bit and to allow WAR to contribute more in situations where you're the Offtank and don't need to be soaking damage for the group. I hate how bland the armory system is in this game compared to XI's job system.