Also, just for clarification sake since I do not have MO1 installed to check..
Didn't MO1 already do this to an extent?
Again, I don't remember if it was purely labeled 'hunger' - but there was a statistic that went 'up' the longer you went without eating and or dying a bunch.
You'd eat food, whether it was a drink-like food or not; lowering it.
Thirst was directly tied to the usage of potions.
* Found a picture from one of FGC videos. Yeah, hunger goes up when you don't eat, die, or both. Thirst would go up, and stay up, because it was directly tied to potion using / consumption.
I think you're talking about reserves, in regards to MO1.
Now if you're referencing MO2, as I haven't messed around with the latest patch, then
yes it should go back to being like this.