SE: Frontlines is bad - really bad - and for a dumb reason. Please fix it.

[Absurdity]

PVP as a whole needs a big changes add PVP gear to the game that does something besides glamour, make it intressting maybe add chests or something that contains random stuff.
Datacenter splits pretty much ruined PVP and made it less active all across the board.

They had exactly that until the rework in Stormblood. You had not only pvp specific gear and materia but also access to your complete pve kit and extra pvp skills you unlocked by raising your pvp rank, the thing that now only exists to unlock titles.
Don't ask me why they removed all of it, I have no idea, but I consider it a step backwards, especially with how limited the new pvp actions are.
As for the Datacenter split, it was probably necessary for NA but all it did on EU was make the party finder emptier and of course pvp as well.

[Ultimatecalibur]

They had exactly that until the rework in Stormblood. You had not only pvp specific gear and materia but also access to your complete pve kit and extra pvp skills you unlocked by raising your pvp rank, the thing that now only exists to unlock titles.
Don't ask me why they removed all of it, I have no idea, but I consider it a step backwards, especially with how limited the new pvp actions are.

That original system pretty much left PvP dead shortly after launch. High ilevel Morale gear made PvPers vastly more powerful than those without the gear (the higher the Morale you had the less damage you took and the more damage you dealt) even with equivalent ilevels, jobs were widely imbalanced due to reliance on PvE kits, status effect materia were close to meaningless, and "must have" rank locked PvP actions just made the gap between high ranked and low ranked PvPers worse.