I don't really want to see a detailed survival mechanism. The game could prompt the player to buy rations and camping equipment before a trip and then you arrive at the destination with the rations consumed.
What I really don't want to see is the ridiculous travel mechanism from the original games. Nobody walks for six days without rest, but that's the assumption built in to the Infinity Engine. It still ticks me off when my party has to sleep at the entrance to Dragon's Eye.
