Given that we're playing in a post-Great Frost world (or at least, post [i]first[/i] Great Frost), I think a bit of leeway on the resource numbers is no bad thing. Keeping track of a few critical ones makes sense and introduces an element of planning - and allows you as GM to inject an element of consequence into decisions - but you don't need to know how many chairs the citizens made in their down-time :P .

Part of the fun of this is going to be interaction between the city-states, figuring out how to spread our influence - and our cities - beyond the confines of our own little craters, and how to survive more long-term in the brave new sparkly cold world.