(name one place where it's going to matter if there is a lot of metal in the whole world or whatever the player just flooded the markt)
Literally anything having to do with trade. Enjoy your worthless gold and less complex world trade economy?
The problem here, as I've probably stated, is that we're in a kind of strange limbo state between two stable phases. Earlier, trade didn't matter a hell of a lot, so we had all kinds of things available to us locally. In the near future, the goal is that you have more specialized things locally and sites trade in a robust manner so that people still have what they need. Right now, we're in between, in a state where we don't have a lot of interesting trade yet, but also don't have a lot of local resources either.
Yes but that's still not in any way diffrend from having the player flood the market with a much to large fortress. This is not a case where the option is going to have a lot of influence on game options. Value calculations can remain the same, yes metals will be worth a lot less if you do this but it still allows the player some level of control (aswell as the option to embark on a very small region and still have some sort of economy). Now I understand that for example saying that
combat is optional might end up screwing a lot of systems alright it already is. This is simmulair to say putting the tempreture really high or low it will simply have effect the world but the same systems as always will still apply (so name one feature that will (or would) stop working if we make this optional).