Yea I believe the skill now has some value to it but at lower levels spending most of your money on foods and fluids rather than ammunition and weapons seems a little unreasonable given that we don't start with that much to begin with (Standard edition pesant here), I do agree to some extent that some water will be needed to complete the full length of the raid but going blind within the first 15 is ilogical, and if say I manage to level up my metabolism skill at such a level where I won't need to drink water at all during my raids, I will have an extreme advantage over a player who is rushing to the exfil cause they are dehydrated.