What problem does this solve exactly? The negative coin if possible would have every similarity. It's not going to solve a problem that the original coin doesn't already address. So why would anyone choose to use the negative version of the coins?
It is only about bringing more value with the same level of power consumption and other investments related to BitGoldLayer. Honestly, dropping output values that have the same probability level as the main coin of a PoW-based network is somewhat like wasting a huge amount of energy—like a gem we just can't see.