This is kind of complex ... I am still unsure if i like the idea.
Civ lives from many simple things. Combined to a complex game.
I generally dislike the idea to make the small things too complex. It tend to destroy the feeling, the gameplay ... and nothing is worser then that.
I think the suggestion from Mexico isn't detailed enough to say much about it.
Brainstomring (dont have enough time to deep thought):
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If u want to hold it simple, i would implement at most 3 or 4 diffrent "complex" ressources at one time. It might be timber, copper and iron in the beginning. Later on you will lose these three and get others.
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You cannot store the ressources. If u have a source of 5 copper, you can produce 5 axeman (require each 1 copper) at the same time. You can say it: You need one strategic ressource to let a city builid one unit.
This way you don't have to "manage"" the ressources in a hard way.
You get a stronger army, if u build constant at some cities. Call it: build a army up slowly.
If u love to play peacefull, you cannot build an strong army with all yor towns.
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Cap the storage room of the central depot (3 per city). Otherwise you can store some of the ressource and trade them away.
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Ressource Converter is a GOOD idea. For Example: In the WW II many nations tries to get oil artifical and some other ressources. With more or less good results. But see: You can use "rape oil" to make a sorch of energy.
With Converter you can simulate this. You need a lot of iron to make steel, or a lot of production to make some "rape oil" ... and so on. It will be expansive, but possible. (but i would make it HELL expansive - i think ... around 5 times the normal production costs of a unit.
I have to go. Maybe i will post this night some deep thoughts about this
But who wants to hear them? Nobody?
. English people always speak of the Battle of Trafalgar to (try to) upset French
. It's very funny to reply that they lost USA when they were encircled by the Continental Army and defeated on sea by.....the French (Battle of the bay of Cheseapeak)
. It's also funny to reply that Surcouf had blocked all trade between India and UK for many monthes with ....only 6 boats roaming and sunking all that was English in the Indian Ocean.
I know they used varnishes, shellacks and tannins that could degrade the environment to a certain extent; but not to the level of a -1 health effect in my opinion. But then again I could be wrong and lets face it most good mods are collaborative in their development and implementation (like we have here at Realism 2.0). A one or two-man band cannot compete with an orchestra. 
His family are old Maine (State of Maine) blue-bloods (rich/noble ancestry) who came over on the MayFlower to the English colony at Plymouth. So to appear closer to the common man, and to show how tough he is; Bush attempts to portray himself as a Texan. It is similar to me (a citizen of New York City/New York State) attempting to portray myself as a native of the states of Mississippi or Louisiana, no matter how many years I lived there. 
