Economy Idea to benefit Crafters and Gatherers alike.
My hope for the economy of the game is that individual materials like Ore, Wood, Gems, etc. have a base cost. Then, when they are used to make an item, a multiplier is given to the sale based on the level of the Crafter. In this way, I feel like the Market won't get screwed up. For example:
Let's say Ore is 1 Gold each. To make a sword, it takes 5 Ore.
When a Novice creates the sword and puts it on the market, the sword sells for 7.5 Gold because a Novice gets a 1.5x Multiplier for his creation. But if a Master Crafter takes those 5 ore and makes a sword, it would sell for 15 Gold because he gets a 3x Multiplier. Obviously, the Master's item could have better Stats, too, but the point is to reign in the problem of the market getting screwed up.
In damn near every MMO I've ever played, the materials to make an item always end up being more expensive than the items themselves, which means Crafters can't afford to buy materials and then sell items for a profit unless they mark up their items so high that they're just not worth buying. It actually becomes easier to level up my own Crafter and make my own stuff.
Just a thought.