I was thinking, there's heatstrokes, and i thought, why not adding them in game, they would slowly fatigue you and make you thirstier, and if not treated like "Freezing" and "Freezing to Death" could lead to death or in this case, unconsciousness, as well as adding Burns, which would be treated with cold waters, "slight burn", "mild burn", "serious burn" and "severe burn".
Oh and last but not least, I just remembered, why not adding a little more hot warmth levels just like cold warmth levels have "numbingly cold" and "freezing, not sure exactly which ones would suit the hot warmth in this case, but I'd like to see more warmth levels.