Make Miner's condense ability only apply if you have more than one stack of an item (counting the block form for this as well)
As it is condense actually doesn't help sometimes, because it takes up inventory space. For example, 20 diamonds. As a stack it only takes up one space. But when condense turns it into 2 blocks and 2 diamonds, it takes up a lot more inventory space. So to make it more useful, I think Condense should wait to condense items until you have more than 64 of that item in your inventory.
As it is condense actually doesn't help sometimes, because it takes up inventory space. For example, 20 diamonds. As a stack it only takes up one space. But when condense turns it into 2 blocks and 2 diamonds, it takes up a lot more inventory space. So to make it more useful, I think Condense should wait to condense items until you have more than 64 of that item in your inventory.