Soul sand should become coal analog for Nether

Soul fire is cool. You can craft soul campfire using soul sand instead of coal - and this totally right.

There should not be coal in Nether. Coal should stay in overworld. Actually, the less ores from overworld we have in nether - the better.

That's why I find strange to use coal to craft soul torch. Soul torch belongs to Nether. So it should be crafted only by using components which available in Nether. Thanks God we don`t have coal ore in Nether.

That`s why should be analog of coal for nether. Since we use soul sand to craft soul campfire - let it be such fuel.

You should be able to put soul sand block in furnace. Soul fire should be able to burn crimson stem and wrapped stem.