Instead of the netherite blocks in the crafting recipe, why not change it to netherite ingots? It would certainly make the netherite cube a lot cheaper, but still, 5 netherite ingots for a cube is pretty expensive. I also don't get why ender marrow is in the crafting recipe. I saw the post about the end respawn anchor, but why would you need end materials for something nether-related?
In the same way, why does the End Crystal recipe related to End have Ghast tear and Blaze powder related to nether? Why does the End rod recipe related to End have a Blaze rod related to nether?