Okay, we all know pretty much any price a Villager will give you is crap, mostly because Emeralds are rarer than diamonds. So, I think emeralds should be as common as coal, so that it can be thought of as a dollar rather than 100 dollars.
Your right, being able to buy diamond pick axes for 10 emeralds is just too expensive if emeralds are hard to find. In fact, we should start out the game with 100 emeralds in our inventory to make it easier on ourselves.
Minecraft is about a challenge, the scarcity of emeralds forces you to trade and interact with them, something you have to do anyway in order to unlock new trading options. Your suggestion completely breaks the game. Fully consider the ramifications of an idea before you post away something for the sake of convenience.
...yeah. But Emeralds are a bit of a waste if they're the rarest ore in the whole game.
Minecraft is about a challenge, the scarcity of emeralds forces you to trade and interact with them, something you have to do anyway in order to unlock new trading options. Your suggestion completely breaks the game. Fully consider the ramifications of an idea before you post away something for the sake of convenience.