> So, other than the water, what else would you consider the bare minimum
> for a travelling 72 hour kit?

The problem is, it's a weather question. I live in the San Francisco Bay Area. Our winter is laughable as winter, but it rains. In the winter, I'd _have_ to have a rain suit and water proof shoes. In the summer, it never rains, and rain wear would be a total waste of weight. But I'd _need_ that water. So in addition to weather, it's a geography question. What you carry depends on the weather, the climate, and the terrain.

I'm not sure an answer can be given without context.