I'm thinking about removing the X multiplier for lower level rocks as it doesn't serve much of a purpose since you can break the rock in the time span of reaching the max multiplier. Might add it so if you break the rock after reaching a X5 multiplier than you get a higher chance of obtaining more than one rock, 1-3 rocks. Another thing i want to add is rare item drops for mining/woodcutting, can be a hat/weapon/crafting material.