i say we should impament something like the stamana bar in dead island and apply it to the pickaxe and shovel like lets say 25 bricks in a row (a row being 5 or less seconds in a row and it would be 1 less (but be invisable so only well informed griefers would know this) and have it more like 10 for the shovel going stright 1 block down or 1 or more up (so not to ruin tunneling)