Netherite Upgrade template replacement

Instead of using a loot based Netherite upgrade template, it should be craftbar. It is hard enough for an average player to get full Netherite nowadays. Needing a rare loot to upgrade PLUS the netherite ingot would just be possible for YouTubers, cause they have enough time to loot thousands of bastion just to find 4 templates. My idea would be to craft it with iron (to anchor it in the diamond stuff), a diamond (to make it still rare), and magma slime (to melt the Netherite to the iron anchor and to give magma slime more value). This would make more sense than a red plate with a blue arrow.