What if we got the Sub-Job System in FFXIV?

[Daeriion_Aeradiir]

If we do a generic "Subjob is 1/2 level of main job" thing for such a system, literally EVERY single physical dps and both PLD/WAR will spec DRK for Darkside. Permanent 20% damage up with zero downside (Only PLD would even be marginally affected, but even then they would have access to bloodweapon) + Bloodweapon for extra haste on every physical job just destroys every other choice. It's not even an illusion of choice, it'd simply be one thing flat out crushes every other choice, and you'd be laughed at for not having said choice.

I'd rather they take time to give all the current jobs more interesting toolkits and rotations than force a system that will 99% likely be incredibly hard to balance.