Some oldies from 1.0 that are dead and buried thankfully:

The Stamina Gauge is restored which increases abilities and attacks the more it's allowed to build up, but using an ability depletes it (this is not the same as TP). But it actually doesn't do that much and is mostly a hinderance than a help (and detracts from the Job Gauge as well).

Also, in order to ensure players take a break and don't spend their every waking moment in the game, the Fatigue System is restored which will penalize you with not just a reduction in gained EXP, but also eventually sap your HP, MP and stats, with no way to remove it unless you spend the exact same amount of time logged out of the game (a debuff icon will be on the screen to helpfully inform you of this amount of time). Changing Jobs or doing something else can also temporarily pause the effect to an extent, but only logging out and spending that time logged out will remove it. Please look forward to it!