I have been working on compiling a survival themed mod pack, one of the mods I make use of is "Apple Skin" which provides a number of interface options regarding food and saturation.

During my play tests with your mod I noticed the behavior of the water droplets (Hydration gauge?) seemed to act very similar to the hunger/saturation mechanic of vanilla.

If this is the case and there is another gauge behind the scenes, similar to saturation, I thought it would be nice to have an overlay similar to the one provided by Apple Skin. In actuality I suggested this to the Dev for Apple Skin first but they felt this is a feature better implemented within Tough As Nails itself.

Our mods are meant to feel like they're just a part of the base game rather than actual add-ons, and I feel like doing that would make thirst feel a bit too different, even if it's not a huge change.