Make "drop: THIS" use the material & data value of whatever was actually broken. This could be useful for wool, smooth_brick, leaves, aliases (ANY_REDSTONE: [drop: THIS]) etc.

Not sure when this was added but it's been in for a while, closing issue.

I was considering including this functionality in drop: DEFAULT at one point, but this is even better. We'd probably need to have a separate case for handling material groups, since most groups have a "main" element that is the one you want dropped (eg for redstone you usually want to drop REDSTONE_ORE, not GLOWING_REDSTONE_ORE), but that shouldn't be hard.