Currently, we can immediatly craft tier 3 rocket if we have enough ingridient.

I think, it will be much better if crafting upper tier has some step by step upgrade, like tier 2 rocket can be crafted by combining tier 1 rocket and other resources, and upgrade tier 2 rocket to tier 3 with netherite ingot by using smelting table. So that we can naturally use all rocket tiers as a game progression.