Honestly, redone if they're smart. The current stats still mean very little in the grand scheme of things, in XI you could actually feel increases with stat increases, in XIV you feel almost nothing because you need to stockpile stats to even boost an already bloated base stat. So while they work on paper, in execution it leaves much to be desired.

Throw in the fact calculations are heavily skewed and built around dlvl likely due to the old Physical/Class level system, they don't matter as much, example: No amount of stats in the world will shave off a level 70+ monster one shotting you, yet in FFXI a level 120+ monster won't come close to one shotting you, not even of the strongest mob families (Wyrm, Iron Giants, Cataurae (unless they zombify you.))

So it's more than just the attributes that need a change, it's the calculations as well. No transparency needed, just a better system overall and people already figure out how much x you need to boost y, the issue is even if you boost y it's still minimal impact due to the calculations in general.