It's simple, why do they want to rework PLD?

The job works, it's not like DRK Living Dead or Bloodweapon before the stacks.
PLD got all the QoLs on its DPS rotation, it wasn't broken in any way or difficult to use because of the job mechanics, just slightly more complex than WAR/DRK.

PLD problems was its defensives and DPS output, they answered the later with some buffs.

It's to fit in the 2 minutes meta burst
The 2 minutes meta burst is something introduced with EW, all bursts are forced to be sync'd on 2 minutes.
It's much more easier to synchronize with your party this way but most jobs become similar due to this.

This is why everyone is anxious about PLD rework. Because the job isn't getting reworked to fix it, but rather to force it into the meta.