Why does battle high exist?

[Commander_Justitia]

If they remove the buffs to Melee and Tanks in Frontline/Rival Wings, everybody will just go back to only playing ranged and casters, like how it was before 4.5.

I didn't want them removed, I said reduce, they are just overpowered atm. I know melees have it more difficult than range, but 30% mitigation stacked with other effects is too strong. Same with fever combined with 15% more attack, doing rotation does more damage than the limit break at that point. And the way some skills work, reset on kill like on ninja with assassinate- gives a lot of stomp material than intended.
Melees dps should maybe keep a higher defense than tanks as they are already tanky with 20k HP and mitigation skills...