burn the souls out of the sand

I'm going to propose a way to renewably farm sand. Hear me out, don't dismiss it out of hand.

So the way this should work is, that soul fire should essentially be made consistent with Minecraft logic. Adding soul sand to any flame should make it burn blue. We already got soul fire, soul torches, soul lanterns and soul campfires, of all things. Adding soul candles and soul jack-o-lanterns is only logical. 

Soul sand should be an actual fuel, like it already is in campfires. You should be able to use it in furnaces, blast furnaces and smokers, which should light them up blue. Now, sacrificing souls to generate light and heat should not be as simple and convenient as doing it with coal. You should only be able to place one soul sand block in the fuel slot, and as it burns down, it should leave sand in the fuel slot, clogging it up unless emptied by the player or a hopper. 

Soul sand should burn for a good long while, but it should slow down the smelting process, to balance nether survival by making it a less attractive fuel source, and also because slowness is kinda its thing.

Or, you know, be cheap and just make it smelt to sand with a blue flame.

It would give us a way to farm sand, something that every skyblock player would be thankful for, but not one that devalues finding and destroying deserts. In order to farm sand out of nothing, you'd already have to have a gold farm and a Piglin farm.

It would be a very neat thing to show to people and have them go "Really? Cool!"