Maybe the devs could put an anvil in multiplayer and if you add an emerald to a pick, it mines twice as fast; axe, speed; hoe, greater farm range; shovel, flint more common; and swords do 2 extra damage. With armor, the protection is increased by 25%. All durabilities are doubled, but you need emerald blocks instead of ingots to add the durability.
Thanks, interesting one. I will give it to developers discuss.
Cheers!