Customizable fuel for furnace etc.

I hope Mojang can introduce a new technical document that contain all sorts of useable fuels and their burn time. Maybe this could be a part of datapack system. For example, the data structure could be like this: - data - - fuels - - - furnace.json - - - blast_furnace.json - - - smoker.json, etc. And the data inside the json file could be like this: { "replace": false, "values":[ {"id":"minecraft:lava_bucket", "burntime":16000, "return":{"item":"minecraft:bucket"} } ] }