We don't yet know if Larian will change the limits, but the part of problem with them is that some classes restore abilities as well.
Could you elaborate on what you mean by this? I'm uncertain if we're in agreement...
I think that this is already a problem: short-rest classes (monk, warlock, fighter) are nerfed compared to long rest classes because of the current emphasis on frequent long rests and the limit of 1 short rest.
If Larian added more short rests per long rest, this would increase the amount of healing available before each long rest. And it would do a better job of preserving balance between classes.
About the change for food: that's attempt to turn food in nothing more than a weak option for dealing with only very small hp-loss. So it'll still help a bit, but no one would ever think about healing up from 5/50hp to full 50hp with food.
I don't think you should ever consider healing from 5 to 50hp with food. If you're close to unconsciousness from a combination of exhaustion and wounds, then no amount of food should heal you back to perfect health.
To be clear, I also dislike 5e's full heal on long rests for similar "it doesn't make sense for sleep to fully heal your wounds" reasons.
