there are many many things which the implimentation has been started, but not brought to a level where players, or even GMs can test yet. Crafting was first started in january or so, and then a few GMs were allowed to test it, which discovered many flaws. It was retested a few different times, and now in CVS a new interface is being worked on. I hope that everyone will be able to use it soon, but as usual, soon is later then we want

so in summery: just because something is in CVS does not mean players will get it, and there have been mercury and other ores for a while, but only when spawned by a developer.